20161225175

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{23887}}^1$

素因数の和:23977

約数の個数: 72

約数和(自身を含む): 31910832576

約数和(自身を除く): 11749607401

約数列:

[1, 5, 7, 13, 25, 35, 49, 53, 65, 91, 175, 245, 265, 325, 371, 455, 637, 689, 1225, 1325, 1855, 2275, 2597, 3185, 3445, 4823, 9275, 12985, 15925, 17225, 23887, 24115, 33761, 64925, 119435, 120575, 167209, 168805, 310531, 597175, 836045, 844025, 1170463, 1266011, 1552655, 2173717, 4180225, 5852315, 6330055, 7763275, 8862077, 10868585, 15216019, 16458143, 29261575, 31650275, 44310385, 54342925, 62034539, 76080095, 82290715, 115207001, 221551925, 310172695, 380400475, 411453575, 576035005, 806449007, 1550863475, 2880175025, 4032245035, 20161225175]

約数ペア:

[(1, 20161225175), (5, 4032245035), (7, 2880175025), (13, 1550863475), (25, 806449007), (35, 576035005), (49, 411453575), (53, 380400475), (65, 310172695), (91, 221551925), (175, 115207001), (245, 82290715), (265, 76080095), (325, 62034539), (371, 54342925), (455, 44310385), (637, 31650275), (689, 29261575), (1225, 16458143), (1325, 15216019), (1855, 10868585), (2275, 8862077), (2597, 7763275), (3185, 6330055), (3445, 5852315), (4823, 4180225), (9275, 2173717), (12985, 1552655), (15925, 1266011), (17225, 1170463), (23887, 844025), (24115, 836045), (33761, 597175), (64925, 310531), (119435, 168805), (120575, 167209)]