20196556900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1951}}^1\times {\mathrm{7963}}^1$

素因数の和:9941

約数の個数: 72

約数和(自身を含む): 47227921664

約数和(自身を除く): 27031364764

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 1951, 3902, 7804, 7963, 9755, 15926, 19510, 25363, 31852, 39020, 39815, 48775, 50726, 79630, 97550, 101452, 103519, 126815, 159260, 195100, 199075, 207038, 253630, 398150, 414076, 507260, 517595, 634075, 796300, 1035190, 1268150, 2070380, 2536300, 2587975, 5175950, 10351900, 15535813, 31071626, 62143252, 77679065, 155358130, 201965569, 310716260, 388395325, 403931138, 776790650, 807862276, 1009827845, 1553581300, 2019655690, 4039311380, 5049139225, 10098278450, 20196556900]

約数ペア:

[(1, 20196556900), (2, 10098278450), (4, 5049139225), (5, 4039311380), (10, 2019655690), (13, 1553581300), (20, 1009827845), (25, 807862276), (26, 776790650), (50, 403931138), (52, 388395325), (65, 310716260), (100, 201965569), (130, 155358130), (260, 77679065), (325, 62143252), (650, 31071626), (1300, 15535813), (1951, 10351900), (3902, 5175950), (7804, 2587975), (7963, 2536300), (9755, 2070380), (15926, 1268150), (19510, 1035190), (25363, 796300), (31852, 634075), (39020, 517595), (39815, 507260), (48775, 414076), (50726, 398150), (79630, 253630), (97550, 207038), (101452, 199075), (103519, 195100), (126815, 159260)]