2155990185

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{79}}^1\times {\mathrm{443}}^1$

素因数の和:607

約数の個数: 72

約数和(自身を含む): 3898177920

約数和(自身を除く): 1742187735

約数列:

[1, 3, 5, 9, 15, 37, 45, 79, 111, 185, 237, 333, 395, 443, 555, 711, 1185, 1329, 1369, 1665, 2215, 2923, 3555, 3987, 4107, 6645, 6845, 8769, 12321, 14615, 16391, 19935, 20535, 26307, 34997, 43845, 49173, 61605, 81955, 104991, 108151, 131535, 147519, 174985, 245865, 314973, 324453, 524955, 540755, 606467, 737595, 973359, 1294889, 1574865, 1622265, 1819401, 3032335, 3884667, 4866795, 5458203, 6474445, 9097005, 11654001, 19423335, 27291015, 47910893, 58270005, 143732679, 239554465, 431198037, 718663395, 2155990185]

約数ペア:

[(1, 2155990185), (3, 718663395), (5, 431198037), (9, 239554465), (15, 143732679), (37, 58270005), (45, 47910893), (79, 27291015), (111, 19423335), (185, 11654001), (237, 9097005), (333, 6474445), (395, 5458203), (443, 4866795), (555, 3884667), (711, 3032335), (1185, 1819401), (1329, 1622265), (1369, 1574865), (1665, 1294889), (2215, 973359), (2923, 737595), (3555, 606467), (3987, 540755), (4107, 524955), (6645, 324453), (6845, 314973), (8769, 245865), (12321, 174985), (14615, 147519), (16391, 131535), (19935, 108151), (20535, 104991), (26307, 81955), (34997, 61605), (43845, 49173)]