21471450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2$

素因数の和:70

約数の個数: 216

約数和(自身を含む): 72432864

約数和(自身を除く): 50961414

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 21, 22, 25, 26, 30, 33, 35, 39, 42, 50, 55, 65, 66, 70, 75, 77, 78, 91, 105, 110, 121, 130, 143, 150, 154, 165, 169, 175, 182, 195, 210, 231, 242, 273, 275, 286, 325, 330, 338, 350, 363, 385, 390, 429, 455, 462, 507, 525, 546, 550, 605, 650, 715, 726, 770, 825, 845, 847, 858, 910, 975, 1001, 1014, 1050, 1155, 1183, 1210, 1365, 1430, 1573, 1650, 1690, 1694, 1815, 1859, 1925, 1950, 2002, 2145, 2275, 2310, 2366, 2535, 2541, 2730, 3003, 3025, 3146, 3549, 3575, 3630, 3718, 3850, 4225, 4235, 4290, 4550, 4719, 5005, 5070, 5082, 5577, 5775, 5915, 6006, 6050, 6825, 7098, 7150, 7865, 8450, 8470, 9075, 9295, 9438, 10010, 10725, 11011, 11154, 11550, 11830, 12675, 12705, 13013, 13650, 15015, 15730, 17745, 18150, 18590, 20449, 21175, 21450, 22022, 23595, 25025, 25350, 25410, 26026, 27885, 29575, 30030, 33033, 35490, 39039, 39325, 40898, 42350, 46475, 47190, 50050, 55055, 55770, 59150, 61347, 63525, 65065, 66066, 75075, 78078, 78650, 88725, 92950, 102245, 110110, 117975, 122694, 127050, 130130, 139425, 143143, 150150, 165165, 177450, 195195, 204490, 235950, 275275, 278850, 286286, 306735, 325325, 330330, 390390, 429429, 511225, 550550, 613470, 650650, 715715, 825825, 858858, 975975, 1022450, 1431430, 1533675, 1651650, 1951950, 2147145, 3067350, 3578575, 4294290, 7157150, 10735725, 21471450]

約数ペア:

[(1, 21471450), (2, 10735725), (3, 7157150), (5, 4294290), (6, 3578575), (7, 3067350), (10, 2147145), (11, 1951950), (13, 1651650), (14, 1533675), (15, 1431430), (21, 1022450), (22, 975975), (25, 858858), (26, 825825), (30, 715715), (33, 650650), (35, 613470), (39, 550550), (42, 511225), (50, 429429), (55, 390390), (65, 330330), (66, 325325), (70, 306735), (75, 286286), (77, 278850), (78, 275275), (91, 235950), (105, 204490), (110, 195195), (121, 177450), (130, 165165), (143, 150150), (150, 143143), (154, 139425), (165, 130130), (169, 127050), (175, 122694), (182, 117975), (195, 110110), (210, 102245), (231, 92950), (242, 88725), (273, 78650), (275, 78078), (286, 75075), (325, 66066), (330, 65065), (338, 63525), (350, 61347), (363, 59150), (385, 55770), (390, 55055), (429, 50050), (455, 47190), (462, 46475), (507, 42350), (525, 40898), (546, 39325), (550, 39039), (605, 35490), (650, 33033), (715, 30030), (726, 29575), (770, 27885), (825, 26026), (845, 25410), (847, 25350), (858, 25025), (910, 23595), (975, 22022), (1001, 21450), (1014, 21175), (1050, 20449), (1155, 18590), (1183, 18150), (1210, 17745), (1365, 15730), (1430, 15015), (1573, 13650), (1650, 13013), (1690, 12705), (1694, 12675), (1815, 11830), (1859, 11550), (1925, 11154), (1950, 11011), (2002, 10725), (2145, 10010), (2275, 9438), (2310, 9295), (2366, 9075), (2535, 8470), (2541, 8450), (2730, 7865), (3003, 7150), (3025, 7098), (3146, 6825), (3549, 6050), (3575, 6006), (3630, 5915), (3718, 5775), (3850, 5577), (4225, 5082), (4235, 5070), (4290, 5005), (4550, 4719)]