1279840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 3190320

約数和(自身を除く): 1910480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 421, 608, 760, 842, 1520, 1684, 2105, 3040, 3368, 4210, 6736, 7999, 8420, 13472, 15998, 16840, 31996, 33680, 39995, 63992, 67360, 79990, 127984, 159980, 255968, 319960, 639920, 1279840]

約数ペア:

[(1, 1279840), (2, 639920), (4, 319960), (5, 255968), (8, 159980), (10, 127984), (16, 79990), (19, 67360), (20, 63992), (32, 39995), (38, 33680), (40, 31996), (76, 16840), (80, 15998), (95, 13472), (152, 8420), (160, 7999), (190, 6736), (304, 4210), (380, 3368), (421, 3040), (608, 2105), (760, 1684), (842, 1520)]