18996909100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{205817}}^1$

素因数の和:205915

約数の個数: 72

約数和(自身を含む): 45019806048

約数和(自身を除く): 26022896948

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 260, 284, 325, 355, 650, 710, 923, 1300, 1420, 1775, 1846, 3550, 3692, 4615, 7100, 9230, 18460, 23075, 46150, 92300, 205817, 411634, 823268, 1029085, 2058170, 2675621, 4116340, 5145425, 5351242, 10290850, 10702484, 13378105, 14613007, 20581700, 26756210, 29226014, 53512420, 58452028, 66890525, 73065035, 133781050, 146130070, 189969091, 267562100, 292260140, 365325175, 379938182, 730650350, 759876364, 949845455, 1461300700, 1899690910, 3799381820, 4749227275, 9498454550, 18996909100]

約数ペア:

[(1, 18996909100), (2, 9498454550), (4, 4749227275), (5, 3799381820), (10, 1899690910), (13, 1461300700), (20, 949845455), (25, 759876364), (26, 730650350), (50, 379938182), (52, 365325175), (65, 292260140), (71, 267562100), (100, 189969091), (130, 146130070), (142, 133781050), (260, 73065035), (284, 66890525), (325, 58452028), (355, 53512420), (650, 29226014), (710, 26756210), (923, 20581700), (1300, 14613007), (1420, 13378105), (1775, 10702484), (1846, 10290850), (3550, 5351242), (3692, 5145425), (4615, 4116340), (7100, 2675621), (9230, 2058170), (18460, 1029085), (23075, 823268), (46150, 411634), (92300, 205817)]