21920600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8431}}^1$

素因数の和:8460

約数の個数: 48

約数和(自身を含む): 54892320

約数和(自身を除く): 32971720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8431, 16862, 33724, 42155, 67448, 84310, 109603, 168620, 210775, 219206, 337240, 421550, 438412, 548015, 843100, 876824, 1096030, 1686200, 2192060, 2740075, 4384120, 5480150, 10960300, 21920600]

約数ペア:

[(1, 21920600), (2, 10960300), (4, 5480150), (5, 4384120), (8, 2740075), (10, 2192060), (13, 1686200), (20, 1096030), (25, 876824), (26, 843100), (40, 548015), (50, 438412), (52, 421550), (65, 337240), (100, 219206), (104, 210775), (130, 168620), (200, 109603), (260, 84310), (325, 67448), (520, 42155), (650, 33724), (1300, 16862), (2600, 8431)]