21309296

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:681

約数の個数: 40

約数和(自身を含む): 44082000

約数和(自身を除く): 22772704

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 272, 314, 499, 628, 998, 1256, 1996, 2512, 2669, 3992, 5338, 7984, 8483, 10676, 16966, 21352, 33932, 42704, 67864, 78343, 135728, 156686, 313372, 626744, 1253488, 1331831, 2663662, 5327324, 10654648, 21309296]

約数ペア:

[(1, 21309296), (2, 10654648), (4, 5327324), (8, 2663662), (16, 1331831), (17, 1253488), (34, 626744), (68, 313372), (136, 156686), (157, 135728), (272, 78343), (314, 67864), (499, 42704), (628, 33932), (998, 21352), (1256, 16966), (1996, 10676), (2512, 8483), (2669, 7984), (3992, 5338)]