20773025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 33164544

約数和(自身を除く): 12391519

約数列:

[1, 5, 7, 13, 23, 25, 35, 65, 91, 115, 161, 175, 299, 325, 397, 455, 575, 805, 1495, 1985, 2093, 2275, 2779, 4025, 5161, 7475, 9131, 9925, 10465, 13895, 25805, 36127, 45655, 52325, 63917, 69475, 118703, 129025, 180635, 228275, 319585, 593515, 830921, 903175, 1597925, 2967575, 4154605, 20773025]

約数ペア:

[(1, 20773025), (5, 4154605), (7, 2967575), (13, 1597925), (23, 903175), (25, 830921), (35, 593515), (65, 319585), (91, 228275), (115, 180635), (161, 129025), (175, 118703), (299, 69475), (325, 63917), (397, 52325), (455, 45655), (575, 36127), (805, 25805), (1495, 13895), (1985, 10465), (2093, 9925), (2275, 9131), (2779, 7475), (4025, 5161)]