7718940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:132

約数の個数: 144

約数和(自身を含む): 25727520

約数和(自身を除く): 18008580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 37, 38, 45, 57, 60, 61, 74, 76, 90, 95, 111, 114, 122, 148, 171, 180, 183, 185, 190, 222, 228, 244, 285, 305, 333, 342, 366, 370, 380, 444, 549, 555, 570, 610, 666, 684, 703, 732, 740, 855, 915, 1098, 1110, 1140, 1159, 1220, 1332, 1406, 1665, 1710, 1830, 2109, 2196, 2220, 2257, 2318, 2745, 2812, 3330, 3420, 3477, 3515, 3660, 4218, 4514, 4636, 5490, 5795, 6327, 6660, 6771, 6954, 7030, 8436, 9028, 10431, 10545, 10980, 11285, 11590, 12654, 13542, 13908, 14060, 17385, 20313, 20862, 21090, 22570, 23180, 25308, 27084, 31635, 33855, 34770, 40626, 41724, 42180, 42883, 45140, 52155, 63270, 67710, 69540, 81252, 85766, 101565, 104310, 126540, 128649, 135420, 171532, 203130, 208620, 214415, 257298, 385947, 406260, 428830, 514596, 643245, 771894, 857660, 1286490, 1543788, 1929735, 2572980, 3859470, 7718940]

約数ペア:

[(1, 7718940), (2, 3859470), (3, 2572980), (4, 1929735), (5, 1543788), (6, 1286490), (9, 857660), (10, 771894), (12, 643245), (15, 514596), (18, 428830), (19, 406260), (20, 385947), (30, 257298), (36, 214415), (37, 208620), (38, 203130), (45, 171532), (57, 135420), (60, 128649), (61, 126540), (74, 104310), (76, 101565), (90, 85766), (95, 81252), (111, 69540), (114, 67710), (122, 63270), (148, 52155), (171, 45140), (180, 42883), (183, 42180), (185, 41724), (190, 40626), (222, 34770), (228, 33855), (244, 31635), (285, 27084), (305, 25308), (333, 23180), (342, 22570), (366, 21090), (370, 20862), (380, 20313), (444, 17385), (549, 14060), (555, 13908), (570, 13542), (610, 12654), (666, 11590), (684, 11285), (703, 10980), (732, 10545), (740, 10431), (855, 9028), (915, 8436), (1098, 7030), (1110, 6954), (1140, 6771), (1159, 6660), (1220, 6327), (1332, 5795), (1406, 5490), (1665, 4636), (1710, 4514), (1830, 4218), (2109, 3660), (2196, 3515), (2220, 3477), (2257, 3420), (2318, 3330), (2745, 2812)]