20813104

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2129}}^1$

素因数の和:2197

約数の個数: 40

約数和(自身を含む): 44372160

約数和(自身を除く): 23559056

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2129, 2444, 4258, 4888, 8516, 9776, 17032, 27677, 34064, 55354, 100063, 110708, 200126, 221416, 400252, 442832, 800504, 1300819, 1601008, 2601638, 5203276, 10406552, 20813104]

約数ペア:

[(1, 20813104), (2, 10406552), (4, 5203276), (8, 2601638), (13, 1601008), (16, 1300819), (26, 800504), (47, 442832), (52, 400252), (94, 221416), (104, 200126), (188, 110708), (208, 100063), (376, 55354), (611, 34064), (752, 27677), (1222, 17032), (2129, 9776), (2444, 8516), (4258, 4888)]