20808280845

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1\times {\mathrm{2677}}^1$

素因数の和:3123

約数の個数: 96

約数和(自身を含む): 40426573824

約数和(自身を除く): 19618292979

約数列:

[1, 3, 5, 9, 11, 15, 33, 41, 45, 55, 99, 123, 165, 205, 369, 383, 451, 495, 615, 1149, 1353, 1845, 1915, 2255, 2677, 3447, 4059, 4213, 5745, 6765, 8031, 12639, 13385, 15703, 17235, 20295, 21065, 24093, 29447, 37917, 40155, 47109, 63195, 78515, 88341, 109757, 120465, 141327, 147235, 172733, 189585, 235545, 265023, 329271, 441705, 518199, 548785, 706635, 863665, 987813, 1025291, 1207327, 1325115, 1554597, 1646355, 2590995, 3075873, 3621981, 4939065, 5126455, 6036635, 7772985, 9227619, 10865943, 11278201, 15379365, 18109905, 33834603, 42036931, 46138095, 54329715, 56391005, 101503809, 126110793, 169173015, 210184655, 378332379, 462406241, 507519045, 630553965, 1387218723, 1891661895, 2312031205, 4161656169, 6936093615, 20808280845]

約数ペア:

[(1, 20808280845), (3, 6936093615), (5, 4161656169), (9, 2312031205), (11, 1891661895), (15, 1387218723), (33, 630553965), (41, 507519045), (45, 462406241), (55, 378332379), (99, 210184655), (123, 169173015), (165, 126110793), (205, 101503809), (369, 56391005), (383, 54329715), (451, 46138095), (495, 42036931), (615, 33834603), (1149, 18109905), (1353, 15379365), (1845, 11278201), (1915, 10865943), (2255, 9227619), (2677, 7772985), (3447, 6036635), (4059, 5126455), (4213, 4939065), (5745, 3621981), (6765, 3075873), (8031, 2590995), (12639, 1646355), (13385, 1554597), (15703, 1325115), (17235, 1207327), (20295, 1025291), (21065, 987813), (24093, 863665), (29447, 706635), (37917, 548785), (40155, 518199), (47109, 441705), (63195, 329271), (78515, 265023), (88341, 235545), (109757, 189585), (120465, 172733), (141327, 147235)]