398625280

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5023}}^1$

素因数の和:5077

約数の個数: 80

約数和(自身を含む): 986793984

約数和(自身を除く): 588168704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 5023, 7936, 9920, 10046, 15872, 19840, 20092, 25115, 39680, 40184, 50230, 79360, 80368, 100460, 155713, 160736, 200920, 311426, 321472, 401840, 622852, 642944, 778565, 803680, 1245704, 1285888, 1557130, 1607360, 2491408, 2571776, 3114260, 3214720, 4982816, 6228520, 6429440, 9965632, 12457040, 12858880, 19931264, 24914080, 39862528, 49828160, 79725056, 99656320, 199312640, 398625280]

約数ペア:

[(1, 398625280), (2, 199312640), (4, 99656320), (5, 79725056), (8, 49828160), (10, 39862528), (16, 24914080), (20, 19931264), (31, 12858880), (32, 12457040), (40, 9965632), (62, 6429440), (64, 6228520), (80, 4982816), (124, 3214720), (128, 3114260), (155, 2571776), (160, 2491408), (248, 1607360), (256, 1557130), (310, 1285888), (320, 1245704), (496, 803680), (512, 778565), (620, 642944), (640, 622852), (992, 401840), (1240, 321472), (1280, 311426), (1984, 200920), (2480, 160736), (2560, 155713), (3968, 100460), (4960, 80368), (5023, 79360), (7936, 50230), (9920, 40184), (10046, 39680), (15872, 25115), (19840, 20092)]