20484536500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{69557}}^1$

素因数の和:69626

約数の個数: 96

約数和(自身を含む): 48612695040

約数和(自身を除く): 28128158540

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 125, 155, 190, 250, 310, 380, 475, 500, 589, 620, 775, 950, 1178, 1550, 1900, 2356, 2375, 2945, 3100, 3875, 4750, 5890, 7750, 9500, 11780, 14725, 15500, 29450, 58900, 69557, 73625, 139114, 147250, 278228, 294500, 347785, 695570, 1321583, 1391140, 1738925, 2156267, 2643166, 3477850, 4312534, 5286332, 6607915, 6955700, 8625068, 8694625, 10781335, 13215830, 17389250, 21562670, 26431660, 33039575, 34778500, 40969073, 43125340, 53906675, 66079150, 81938146, 107813350, 132158300, 163876292, 165197875, 204845365, 215626700, 269533375, 330395750, 409690730, 539066750, 660791500, 819381460, 1024226825, 1078133500, 2048453650, 4096907300, 5121134125, 10242268250, 20484536500]

約数ペア:

[(1, 20484536500), (2, 10242268250), (4, 5121134125), (5, 4096907300), (10, 2048453650), (19, 1078133500), (20, 1024226825), (25, 819381460), (31, 660791500), (38, 539066750), (50, 409690730), (62, 330395750), (76, 269533375), (95, 215626700), (100, 204845365), (124, 165197875), (125, 163876292), (155, 132158300), (190, 107813350), (250, 81938146), (310, 66079150), (380, 53906675), (475, 43125340), (500, 40969073), (589, 34778500), (620, 33039575), (775, 26431660), (950, 21562670), (1178, 17389250), (1550, 13215830), (1900, 10781335), (2356, 8694625), (2375, 8625068), (2945, 6955700), (3100, 6607915), (3875, 5286332), (4750, 4312534), (5890, 3477850), (7750, 2643166), (9500, 2156267), (11780, 1738925), (14725, 1391140), (15500, 1321583), (29450, 695570), (58900, 347785), (69557, 294500), (73625, 278228), (139114, 147250)]