1989929560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{569}}^1$

素因数の和:773

約数の個数: 128

約数和(自身を含む): 4912488000

約数和(自身を除く): 2922558440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 68, 74, 85, 136, 139, 148, 170, 185, 278, 296, 340, 370, 556, 569, 629, 680, 695, 740, 1112, 1138, 1258, 1390, 1480, 2276, 2363, 2516, 2780, 2845, 3145, 4552, 4726, 5032, 5143, 5560, 5690, 6290, 9452, 9673, 10286, 11380, 11815, 12580, 18904, 19346, 20572, 21053, 22760, 23630, 25160, 25715, 38692, 41144, 42106, 47260, 48365, 51430, 77384, 79091, 84212, 87431, 94520, 96730, 102860, 105265, 158182, 168424, 174862, 193460, 205720, 210530, 316364, 349724, 357901, 386920, 395455, 421060, 437155, 632728, 699448, 715802, 790910, 842120, 874310, 1344547, 1431604, 1581820, 1748620, 1789505, 2689094, 2863208, 2926367, 3163640, 3497240, 3579010, 5378188, 5852734, 6722735, 7158020, 10756376, 11705468, 13445470, 14316040, 14631835, 23410936, 26890940, 29263670, 49748239, 53781880, 58527340, 99496478, 117054680, 198992956, 248741195, 397985912, 497482390, 994964780, 1989929560]

約数ペア:

[(1, 1989929560), (2, 994964780), (4, 497482390), (5, 397985912), (8, 248741195), (10, 198992956), (17, 117054680), (20, 99496478), (34, 58527340), (37, 53781880), (40, 49748239), (68, 29263670), (74, 26890940), (85, 23410936), (136, 14631835), (139, 14316040), (148, 13445470), (170, 11705468), (185, 10756376), (278, 7158020), (296, 6722735), (340, 5852734), (370, 5378188), (556, 3579010), (569, 3497240), (629, 3163640), (680, 2926367), (695, 2863208), (740, 2689094), (1112, 1789505), (1138, 1748620), (1258, 1581820), (1390, 1431604), (1480, 1344547), (2276, 874310), (2363, 842120), (2516, 790910), (2780, 715802), (2845, 699448), (3145, 632728), (4552, 437155), (4726, 421060), (5032, 395455), (5143, 386920), (5560, 357901), (5690, 349724), (6290, 316364), (9452, 210530), (9673, 205720), (10286, 193460), (11380, 174862), (11815, 168424), (12580, 158182), (18904, 105265), (19346, 102860), (20572, 96730), (21053, 94520), (22760, 87431), (23630, 84212), (25160, 79091), (25715, 77384), (38692, 51430), (41144, 48365), (42106, 47260)]