25479980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 30403540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 197, 223, 290, 394, 446, 580, 788, 892, 985, 1115, 1970, 2230, 3940, 4460, 5713, 6467, 11426, 12934, 22852, 25868, 28565, 32335, 43931, 57130, 64670, 87862, 114260, 129340, 175724, 219655, 439310, 878620, 1273999, 2547998, 5095996, 6369995, 12739990, 25479980]

約数ペア:

[(1, 25479980), (2, 12739990), (4, 6369995), (5, 5095996), (10, 2547998), (20, 1273999), (29, 878620), (58, 439310), (116, 219655), (145, 175724), (197, 129340), (223, 114260), (290, 87862), (394, 64670), (446, 57130), (580, 43931), (788, 32335), (892, 28565), (985, 25868), (1115, 22852), (1970, 12934), (2230, 11426), (3940, 6467), (4460, 5713)]