640721844

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{8447}}^1$

素因数の和:8514

約数の個数: 108

約数和(自身を含む): 1928070144

約数和(自身を除く): 1287348300

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 49, 63, 84, 86, 98, 126, 129, 147, 172, 196, 252, 258, 294, 301, 387, 441, 516, 588, 602, 774, 882, 903, 1204, 1548, 1764, 1806, 2107, 2709, 3612, 4214, 5418, 6321, 8428, 8447, 10836, 12642, 16894, 18963, 25284, 25341, 33788, 37926, 50682, 59129, 75852, 76023, 101364, 118258, 152046, 177387, 236516, 304092, 354774, 363221, 413903, 532161, 709548, 726442, 827806, 1064322, 1089663, 1241709, 1452884, 1655612, 2128644, 2179326, 2483418, 2542547, 3268989, 3725127, 4358652, 4966836, 5085094, 6537978, 7450254, 7627641, 10170188, 13075956, 14900508, 15255282, 17797829, 22882923, 30510564, 35595658, 45765846, 53393487, 71191316, 91531692, 106786974, 160180461, 213573948, 320360922, 640721844]

約数ペア:

[(1, 640721844), (2, 320360922), (3, 213573948), (4, 160180461), (6, 106786974), (7, 91531692), (9, 71191316), (12, 53393487), (14, 45765846), (18, 35595658), (21, 30510564), (28, 22882923), (36, 17797829), (42, 15255282), (43, 14900508), (49, 13075956), (63, 10170188), (84, 7627641), (86, 7450254), (98, 6537978), (126, 5085094), (129, 4966836), (147, 4358652), (172, 3725127), (196, 3268989), (252, 2542547), (258, 2483418), (294, 2179326), (301, 2128644), (387, 1655612), (441, 1452884), (516, 1241709), (588, 1089663), (602, 1064322), (774, 827806), (882, 726442), (903, 709548), (1204, 532161), (1548, 413903), (1764, 363221), (1806, 354774), (2107, 304092), (2709, 236516), (3612, 177387), (4214, 152046), (5418, 118258), (6321, 101364), (8428, 76023), (8447, 75852), (10836, 59129), (12642, 50682), (16894, 37926), (18963, 33788), (25284, 25341)]