20694668

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:793

約数の個数: 24

約数和(自身を含む): 37319184

約数和(自身を除く): 16624516

約数列:

[1, 2, 4, 41, 82, 164, 257, 491, 514, 982, 1028, 1964, 10537, 20131, 21074, 40262, 42148, 80524, 126187, 252374, 504748, 5173667, 10347334, 20694668]

約数ペア:

[(1, 20694668), (2, 10347334), (4, 5173667), (41, 504748), (82, 252374), (164, 126187), (257, 80524), (491, 42148), (514, 40262), (982, 21074), (1028, 20131), (1964, 10537)]