16705280

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 41403264

約数和(自身を除く): 24697984

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, 421, 496, 620, 640, 842, 992, 1240, 1280, 1684, 1984, 2105, 2480, 3368, 3968, 4210, 4960, 6736, 7936, 8420, 9920, 13051, 13472, 16840, 19840, 26102, 26944, 33680, 39680, 52204, 53888, 65255, 67360, 104408, 107776, 130510, 134720, 208816, 261020, 269440, 417632, 522040, 538880, 835264, 1044080, 1670528, 2088160, 3341056, 4176320, 8352640, 16705280]

約数ペア:

[(1, 16705280), (2, 8352640), (4, 4176320), (5, 3341056), (8, 2088160), (10, 1670528), (16, 1044080), (20, 835264), (31, 538880), (32, 522040), (40, 417632), (62, 269440), (64, 261020), (80, 208816), (124, 134720), (128, 130510), (155, 107776), (160, 104408), (248, 67360), (256, 65255), (310, 53888), (320, 52204), (421, 39680), (496, 33680), (620, 26944), (640, 26102), (842, 19840), (992, 16840), (1240, 13472), (1280, 13051), (1684, 9920), (1984, 8420), (2105, 7936), (2480, 6736), (3368, 4960), (3968, 4210)]