19712900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6359}}^1$

素因数の和:6404

約数の個数: 36

約数和(自身を含む): 44163840

約数和(自身を除く): 24450940

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6359, 12718, 25436, 31795, 63590, 127180, 158975, 197129, 317950, 394258, 635900, 788516, 985645, 1971290, 3942580, 4928225, 9856450, 19712900]

約数ペア:

[(1, 19712900), (2, 9856450), (4, 4928225), (5, 3942580), (10, 1971290), (20, 985645), (25, 788516), (31, 635900), (50, 394258), (62, 317950), (100, 197129), (124, 158975), (155, 127180), (310, 63590), (620, 31795), (775, 25436), (1550, 12718), (3100, 6359)]