788583020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1\times {\mathrm{1327}}^1$

素因数の和:2070

約数の個数: 48

約数和(自身を含む): 1698267648

約数和(自身を除く): 909684628

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 691, 860, 1327, 1382, 2654, 2764, 3455, 5308, 6635, 6910, 13270, 13820, 26540, 29713, 57061, 59426, 114122, 118852, 148565, 228244, 285305, 297130, 570610, 594260, 916957, 1141220, 1833914, 3667828, 4584785, 9169570, 18339140, 39429151, 78858302, 157716604, 197145755, 394291510, 788583020]

約数ペア:

[(1, 788583020), (2, 394291510), (4, 197145755), (5, 157716604), (10, 78858302), (20, 39429151), (43, 18339140), (86, 9169570), (172, 4584785), (215, 3667828), (430, 1833914), (691, 1141220), (860, 916957), (1327, 594260), (1382, 570610), (2654, 297130), (2764, 285305), (3455, 228244), (5308, 148565), (6635, 118852), (6910, 114122), (13270, 59426), (13820, 57061), (26540, 29713)]