20019584

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 43953840

約数和(自身を除く): 23934256

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 64, 104, 106, 128, 208, 212, 227, 416, 424, 454, 689, 832, 848, 908, 1378, 1664, 1696, 1816, 2756, 2951, 3392, 3632, 5512, 5902, 6784, 7264, 11024, 11804, 12031, 14528, 22048, 23608, 24062, 29056, 44096, 47216, 48124, 88192, 94432, 96248, 156403, 188864, 192496, 312806, 377728, 384992, 625612, 769984, 1251224, 1539968, 2502448, 5004896, 10009792, 20019584]

約数ペア:

[(1, 20019584), (2, 10009792), (4, 5004896), (8, 2502448), (13, 1539968), (16, 1251224), (26, 769984), (32, 625612), (52, 384992), (53, 377728), (64, 312806), (104, 192496), (106, 188864), (128, 156403), (208, 96248), (212, 94432), (227, 88192), (416, 48124), (424, 47216), (454, 44096), (689, 29056), (832, 24062), (848, 23608), (908, 22048), (1378, 14528), (1664, 12031), (1696, 11804), (1816, 11024), (2756, 7264), (2951, 6784), (3392, 5902), (3632, 5512)]