21999625

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:250

約数の個数: 32

約数和(自身を含む): 29577600

約数和(自身を除く): 7577975

約数列:

[1, 5, 19, 25, 59, 95, 125, 157, 295, 475, 785, 1121, 1475, 2375, 2983, 3925, 5605, 7375, 9263, 14915, 19625, 28025, 46315, 74575, 140125, 175997, 231575, 372875, 879985, 1157875, 4399925, 21999625]

約数ペア:

[(1, 21999625), (5, 4399925), (19, 1157875), (25, 879985), (59, 372875), (95, 231575), (125, 175997), (157, 140125), (295, 74575), (475, 46315), (785, 28025), (1121, 19625), (1475, 14915), (2375, 9263), (2983, 7375), (3925, 5605)]