639887796

素因数分解:

$2^2\times 3^3\times {\mathrm{163}}^2\times {\mathrm{223}}^1$

素因数の和:562

約数の個数: 72

約数和(自身を含む): 1676693760

約数和(自身を除く): 1036805964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 163, 223, 326, 446, 489, 652, 669, 892, 978, 1338, 1467, 1956, 2007, 2676, 2934, 4014, 4401, 5868, 6021, 8028, 8802, 12042, 17604, 24084, 26569, 36349, 53138, 72698, 79707, 106276, 109047, 145396, 159414, 218094, 239121, 318828, 327141, 436188, 478242, 654282, 717363, 956484, 981423, 1308564, 1434726, 1962846, 2869452, 3925692, 5924887, 11849774, 17774661, 23699548, 35549322, 53323983, 71098644, 106647966, 159971949, 213295932, 319943898, 639887796]

約数ペア:

[(1, 639887796), (2, 319943898), (3, 213295932), (4, 159971949), (6, 106647966), (9, 71098644), (12, 53323983), (18, 35549322), (27, 23699548), (36, 17774661), (54, 11849774), (108, 5924887), (163, 3925692), (223, 2869452), (326, 1962846), (446, 1434726), (489, 1308564), (652, 981423), (669, 956484), (892, 717363), (978, 654282), (1338, 478242), (1467, 436188), (1956, 327141), (2007, 318828), (2676, 239121), (2934, 218094), (4014, 159414), (4401, 145396), (5868, 109047), (6021, 106276), (8028, 79707), (8802, 72698), (12042, 53138), (17604, 36349), (24084, 26569)]