258931840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{421}}^1$

素因数の和:502

約数の個数: 96

約数和(自身を含む): 641140380

約数和(自身を除く): 382208540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 421, 496, 620, 640, 842, 961, 992, 1240, 1684, 1922, 1984, 2105, 2480, 3368, 3844, 3968, 4210, 4805, 4960, 6736, 7688, 8420, 9610, 9920, 13051, 13472, 15376, 16840, 19220, 19840, 26102, 26944, 30752, 33680, 38440, 52204, 53888, 61504, 65255, 67360, 76880, 104408, 123008, 130510, 134720, 153760, 208816, 261020, 269440, 307520, 404581, 417632, 522040, 615040, 809162, 835264, 1044080, 1618324, 1670528, 2022905, 2088160, 3236648, 4045810, 4176320, 6473296, 8091620, 8352640, 12946592, 16183240, 25893184, 32366480, 51786368, 64732960, 129465920, 258931840]

約数ペア:

[(1, 258931840), (2, 129465920), (4, 64732960), (5, 51786368), (8, 32366480), (10, 25893184), (16, 16183240), (20, 12946592), (31, 8352640), (32, 8091620), (40, 6473296), (62, 4176320), (64, 4045810), (80, 3236648), (124, 2088160), (128, 2022905), (155, 1670528), (160, 1618324), (248, 1044080), (310, 835264), (320, 809162), (421, 615040), (496, 522040), (620, 417632), (640, 404581), (842, 307520), (961, 269440), (992, 261020), (1240, 208816), (1684, 153760), (1922, 134720), (1984, 130510), (2105, 123008), (2480, 104408), (3368, 76880), (3844, 67360), (3968, 65255), (4210, 61504), (4805, 53888), (4960, 52204), (6736, 38440), (7688, 33680), (8420, 30752), (9610, 26944), (9920, 26102), (13051, 19840), (13472, 19220), (15376, 16840)]