20164557500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^2\times {\mathrm{22343}}^1$

素因数の和:22405

約数の個数: 90

約数和(自身を含む): 46540920888

約数和(自身を除く): 26376363388

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 361, 380, 475, 500, 625, 722, 950, 1250, 1444, 1805, 1900, 2375, 2500, 3610, 4750, 7220, 9025, 9500, 11875, 18050, 22343, 23750, 36100, 44686, 45125, 47500, 89372, 90250, 111715, 180500, 223430, 225625, 424517, 446860, 451250, 558575, 849034, 902500, 1117150, 1698068, 2122585, 2234300, 2792875, 4245170, 5585750, 8065823, 8490340, 10612925, 11171500, 13964375, 16131646, 21225850, 27928750, 32263292, 40329115, 42451700, 53064625, 55857500, 80658230, 106129250, 161316460, 201645575, 212258500, 265323125, 403291150, 530646250, 806582300, 1008227875, 1061292500, 2016455750, 4032911500, 5041139375, 10082278750, 20164557500]

約数ペア:

[(1, 20164557500), (2, 10082278750), (4, 5041139375), (5, 4032911500), (10, 2016455750), (19, 1061292500), (20, 1008227875), (25, 806582300), (38, 530646250), (50, 403291150), (76, 265323125), (95, 212258500), (100, 201645575), (125, 161316460), (190, 106129250), (250, 80658230), (361, 55857500), (380, 53064625), (475, 42451700), (500, 40329115), (625, 32263292), (722, 27928750), (950, 21225850), (1250, 16131646), (1444, 13964375), (1805, 11171500), (1900, 10612925), (2375, 8490340), (2500, 8065823), (3610, 5585750), (4750, 4245170), (7220, 2792875), (9025, 2234300), (9500, 2122585), (11875, 1698068), (18050, 1117150), (22343, 902500), (23750, 849034), (36100, 558575), (44686, 451250), (45125, 446860), (47500, 424517), (89372, 225625), (90250, 223430), (111715, 180500)]