20161519325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^2\times {\mathrm{113}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 27518169528

約数和(自身を除く): 7356650203

約数列:

[1, 5, 17, 25, 53, 85, 89, 113, 265, 425, 445, 565, 901, 1325, 1513, 1921, 2225, 2825, 4505, 4717, 5989, 7565, 7921, 9605, 10057, 22525, 23585, 29945, 37825, 39605, 48025, 50285, 80189, 101813, 117925, 134657, 149725, 170969, 198025, 251425, 400945, 419813, 509065, 533021, 673285, 854845, 895073, 2004725, 2099065, 2545325, 2665105, 3366425, 4274225, 4475365, 7136821, 9061357, 10495325, 13325525, 15216241, 22376825, 35684105, 45306785, 47438869, 76081205, 178420525, 226533925, 237194345, 380406025, 806460773, 1185971725, 4032303865, 20161519325]

約数ペア:

[(1, 20161519325), (5, 4032303865), (17, 1185971725), (25, 806460773), (53, 380406025), (85, 237194345), (89, 226533925), (113, 178420525), (265, 76081205), (425, 47438869), (445, 45306785), (565, 35684105), (901, 22376825), (1325, 15216241), (1513, 13325525), (1921, 10495325), (2225, 9061357), (2825, 7136821), (4505, 4475365), (4717, 4274225), (5989, 3366425), (7565, 2665105), (7921, 2545325), (9605, 2099065), (10057, 2004725), (22525, 895073), (23585, 854845), (29945, 673285), (37825, 533021), (39605, 509065), (48025, 419813), (50285, 400945), (80189, 251425), (101813, 198025), (117925, 170969), (134657, 149725)]