640479420

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9967}}^1$

素因数の和:10009

約数の個数: 192

約数和(自身を含む): 2411458560

約数和(自身を除く): 1770979140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 27, 28, 30, 34, 35, 36, 42, 45, 51, 54, 60, 63, 68, 70, 84, 85, 90, 102, 105, 108, 119, 126, 135, 140, 153, 170, 180, 189, 204, 210, 238, 252, 255, 270, 306, 315, 340, 357, 378, 420, 459, 476, 510, 540, 595, 612, 630, 714, 756, 765, 918, 945, 1020, 1071, 1190, 1260, 1428, 1530, 1785, 1836, 1890, 2142, 2295, 2380, 3060, 3213, 3570, 3780, 4284, 4590, 5355, 6426, 7140, 9180, 9967, 10710, 12852, 16065, 19934, 21420, 29901, 32130, 39868, 49835, 59802, 64260, 69769, 89703, 99670, 119604, 139538, 149505, 169439, 179406, 199340, 209307, 269109, 279076, 299010, 338878, 348845, 358812, 418614, 448515, 508317, 538218, 598020, 627921, 677756, 697690, 837228, 847195, 897030, 1016634, 1046535, 1076436, 1186073, 1255842, 1345545, 1395380, 1524951, 1694390, 1794060, 1883763, 2033268, 2093070, 2372146, 2511684, 2541585, 2691090, 3049902, 3139605, 3388780, 3558219, 3767526, 4186140, 4574853, 4744292, 5083170, 5382180, 5930365, 6099804, 6279210, 7116438, 7535052, 7624755, 9149706, 9418815, 10166340, 10674657, 11860730, 12558420, 14232876, 15249510, 17791095, 18299412, 18837630, 21349314, 22874265, 23721460, 30499020, 32023971, 35582190, 37675260, 42698628, 45748530, 53373285, 64047942, 71164380, 91497060, 106746570, 128095884, 160119855, 213493140, 320239710, 640479420]

約数ペア:

[(1, 640479420), (2, 320239710), (3, 213493140), (4, 160119855), (5, 128095884), (6, 106746570), (7, 91497060), (9, 71164380), (10, 64047942), (12, 53373285), (14, 45748530), (15, 42698628), (17, 37675260), (18, 35582190), (20, 32023971), (21, 30499020), (27, 23721460), (28, 22874265), (30, 21349314), (34, 18837630), (35, 18299412), (36, 17791095), (42, 15249510), (45, 14232876), (51, 12558420), (54, 11860730), (60, 10674657), (63, 10166340), (68, 9418815), (70, 9149706), (84, 7624755), (85, 7535052), (90, 7116438), (102, 6279210), (105, 6099804), (108, 5930365), (119, 5382180), (126, 5083170), (135, 4744292), (140, 4574853), (153, 4186140), (170, 3767526), (180, 3558219), (189, 3388780), (204, 3139605), (210, 3049902), (238, 2691090), (252, 2541585), (255, 2511684), (270, 2372146), (306, 2093070), (315, 2033268), (340, 1883763), (357, 1794060), (378, 1694390), (420, 1524951), (459, 1395380), (476, 1345545), (510, 1255842), (540, 1186073), (595, 1076436), (612, 1046535), (630, 1016634), (714, 897030), (756, 847195), (765, 837228), (918, 697690), (945, 677756), (1020, 627921), (1071, 598020), (1190, 538218), (1260, 508317), (1428, 448515), (1530, 418614), (1785, 358812), (1836, 348845), (1890, 338878), (2142, 299010), (2295, 279076), (2380, 269109), (3060, 209307), (3213, 199340), (3570, 179406), (3780, 169439), (4284, 149505), (4590, 139538), (5355, 119604), (6426, 99670), (7140, 89703), (9180, 69769), (9967, 64260), (10710, 59802), (12852, 49835), (16065, 39868), (19934, 32130), (21420, 29901)]