21193120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:494

約数の個数: 96

約数和(自身を含む): 56391552

約数和(自身を除く): 35198432

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 65, 80, 92, 104, 115, 130, 160, 184, 208, 230, 260, 299, 368, 416, 443, 460, 520, 598, 736, 886, 920, 1040, 1196, 1495, 1772, 1840, 2080, 2215, 2392, 2990, 3544, 3680, 4430, 4784, 5759, 5980, 7088, 8860, 9568, 10189, 11518, 11960, 14176, 17720, 20378, 23036, 23920, 28795, 35440, 40756, 46072, 47840, 50945, 57590, 70880, 81512, 92144, 101890, 115180, 132457, 163024, 184288, 203780, 230360, 264914, 326048, 407560, 460720, 529828, 662285, 815120, 921440, 1059656, 1324570, 1630240, 2119312, 2649140, 4238624, 5298280, 10596560, 21193120]

約数ペア:

[(1, 21193120), (2, 10596560), (4, 5298280), (5, 4238624), (8, 2649140), (10, 2119312), (13, 1630240), (16, 1324570), (20, 1059656), (23, 921440), (26, 815120), (32, 662285), (40, 529828), (46, 460720), (52, 407560), (65, 326048), (80, 264914), (92, 230360), (104, 203780), (115, 184288), (130, 163024), (160, 132457), (184, 115180), (208, 101890), (230, 92144), (260, 81512), (299, 70880), (368, 57590), (416, 50945), (443, 47840), (460, 46072), (520, 40756), (598, 35440), (736, 28795), (886, 23920), (920, 23036), (1040, 20378), (1196, 17720), (1495, 14176), (1772, 11960), (1840, 11518), (2080, 10189), (2215, 9568), (2392, 8860), (2990, 7088), (3544, 5980), (3680, 5759), (4430, 4784)]