21921388

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{349}}^1\times {\mathrm{383}}^1$

素因数の和:777

約数の個数: 24

約数和(自身を含む): 39513600

約数和(自身を除く): 17592212

約数列:

[1, 2, 4, 41, 82, 164, 349, 383, 698, 766, 1396, 1532, 14309, 15703, 28618, 31406, 57236, 62812, 133667, 267334, 534668, 5480347, 10960694, 21921388]

約数ペア:

[(1, 21921388), (2, 10960694), (4, 5480347), (41, 534668), (82, 267334), (164, 133667), (349, 62812), (383, 57236), (698, 31406), (766, 28618), (1396, 15703), (1532, 14309)]