639849920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1217}}^1$

素因数の和:1318

約数の個数: 112

約数和(自身を含む): 1603784448

約数和(自身を除く): 963934528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 53, 62, 64, 80, 106, 124, 155, 160, 212, 248, 265, 310, 320, 424, 496, 530, 620, 848, 992, 1060, 1217, 1240, 1643, 1696, 1984, 2120, 2434, 2480, 3286, 3392, 4240, 4868, 4960, 6085, 6572, 8215, 8480, 9736, 9920, 12170, 13144, 16430, 16960, 19472, 24340, 26288, 32860, 37727, 38944, 48680, 52576, 64501, 65720, 75454, 77888, 97360, 105152, 129002, 131440, 150908, 188635, 194720, 258004, 262880, 301816, 322505, 377270, 389440, 516008, 525760, 603632, 645010, 754540, 1032016, 1207264, 1290020, 1509080, 1999531, 2064032, 2414528, 2580040, 3018160, 3999062, 4128064, 5160080, 6036320, 7998124, 9997655, 10320160, 12072640, 15996248, 19995310, 20640320, 31992496, 39990620, 63984992, 79981240, 127969984, 159962480, 319924960, 639849920]

約数ペア:

[(1, 639849920), (2, 319924960), (4, 159962480), (5, 127969984), (8, 79981240), (10, 63984992), (16, 39990620), (20, 31992496), (31, 20640320), (32, 19995310), (40, 15996248), (53, 12072640), (62, 10320160), (64, 9997655), (80, 7998124), (106, 6036320), (124, 5160080), (155, 4128064), (160, 3999062), (212, 3018160), (248, 2580040), (265, 2414528), (310, 2064032), (320, 1999531), (424, 1509080), (496, 1290020), (530, 1207264), (620, 1032016), (848, 754540), (992, 645010), (1060, 603632), (1217, 525760), (1240, 516008), (1643, 389440), (1696, 377270), (1984, 322505), (2120, 301816), (2434, 262880), (2480, 258004), (3286, 194720), (3392, 188635), (4240, 150908), (4868, 131440), (4960, 129002), (6085, 105152), (6572, 97360), (8215, 77888), (8480, 75454), (9736, 65720), (9920, 64501), (12170, 52576), (13144, 48680), (16430, 38944), (16960, 37727), (19472, 32860), (24340, 26288)]