80954380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 188706672

約数和(自身を除く): 107752292

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 215, 260, 338, 430, 557, 559, 676, 845, 860, 1114, 1118, 1690, 2228, 2236, 2785, 2795, 3380, 5570, 5590, 7241, 7267, 11140, 11180, 14482, 14534, 23951, 28964, 29068, 36205, 36335, 47902, 72410, 72670, 94133, 95804, 119755, 144820, 145340, 188266, 239510, 311363, 376532, 470665, 479020, 622726, 941330, 1245452, 1556815, 1882660, 3113630, 4047719, 6227260, 8095438, 16190876, 20238595, 40477190, 80954380]

約数ペア:

[(1, 80954380), (2, 40477190), (4, 20238595), (5, 16190876), (10, 8095438), (13, 6227260), (20, 4047719), (26, 3113630), (43, 1882660), (52, 1556815), (65, 1245452), (86, 941330), (130, 622726), (169, 479020), (172, 470665), (215, 376532), (260, 311363), (338, 239510), (430, 188266), (557, 145340), (559, 144820), (676, 119755), (845, 95804), (860, 94133), (1114, 72670), (1118, 72410), (1690, 47902), (2228, 36335), (2236, 36205), (2785, 29068), (2795, 28964), (3380, 23951), (5570, 14534), (5590, 14482), (7241, 11180), (7267, 11140)]