20495695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 28123200

約数和(自身を除く): 7627505

約数列:

[1, 5, 11, 41, 55, 61, 149, 205, 305, 451, 671, 745, 1639, 2255, 2501, 3355, 6109, 8195, 9089, 12505, 27511, 30545, 45445, 67199, 99979, 137555, 335995, 372649, 499895, 1863245, 4099139, 20495695]

約数ペア:

[(1, 20495695), (5, 4099139), (11, 1863245), (41, 499895), (55, 372649), (61, 335995), (149, 137555), (205, 99979), (305, 67199), (451, 45445), (671, 30545), (745, 27511), (1639, 12505), (2255, 9089), (2501, 8195), (3355, 6109)]