20412975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 37319040

約数和(自身を除く): 16906065

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 109, 165, 227, 275, 327, 545, 681, 825, 1135, 1199, 1635, 2497, 2725, 3405, 3597, 5675, 5995, 7491, 8175, 12485, 17025, 17985, 24743, 29975, 37455, 62425, 74229, 89925, 123715, 187275, 272173, 371145, 618575, 816519, 1360865, 1855725, 4082595, 6804325, 20412975]

約数ペア:

[(1, 20412975), (3, 6804325), (5, 4082595), (11, 1855725), (15, 1360865), (25, 816519), (33, 618575), (55, 371145), (75, 272173), (109, 187275), (165, 123715), (227, 89925), (275, 74229), (327, 62425), (545, 37455), (681, 29975), (825, 24743), (1135, 17985), (1199, 17025), (1635, 12485), (2497, 8175), (2725, 7491), (3405, 5995), (3597, 5675)]