21495175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^2$

素因数の和:160

約数の個数: 36

約数和(自身を含む): 30735880

約数和(自身を除く): 9240705

約数列:

[1, 5, 13, 19, 25, 59, 65, 95, 247, 295, 325, 475, 767, 1121, 1235, 1475, 3481, 3835, 5605, 6175, 14573, 17405, 19175, 28025, 45253, 66139, 72865, 87025, 226265, 330695, 364325, 859807, 1131325, 1653475, 4299035, 21495175]

約数ペア:

[(1, 21495175), (5, 4299035), (13, 1653475), (19, 1131325), (25, 859807), (59, 364325), (65, 330695), (95, 226265), (247, 87025), (295, 72865), (325, 66139), (475, 45253), (767, 28025), (1121, 19175), (1235, 17405), (1475, 14573), (3481, 6175), (3835, 5605)]