21463825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{619}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 28445600

約数和(自身を除く): 6981775

約数列:

[1, 5, 19, 25, 73, 95, 365, 475, 619, 1387, 1825, 3095, 6935, 11761, 15475, 34675, 45187, 58805, 225935, 294025, 858553, 1129675, 4292765, 21463825]

約数ペア:

[(1, 21463825), (5, 4292765), (19, 1129675), (25, 858553), (73, 294025), (95, 225935), (365, 58805), (475, 45187), (619, 34675), (1387, 15475), (1825, 11761), (3095, 6935)]