209938280

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1\times {\mathrm{271}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 481178880

約数和(自身を除く): 271240600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 181, 214, 271, 362, 428, 535, 542, 724, 856, 905, 1070, 1084, 1355, 1448, 1810, 2140, 2168, 2710, 3620, 4280, 5420, 7240, 10840, 19367, 28997, 38734, 49051, 57994, 77468, 96835, 98102, 115988, 144985, 154936, 193670, 196204, 231976, 245255, 289970, 387340, 392408, 490510, 579940, 774680, 981020, 1159880, 1962040, 5248457, 10496914, 20993828, 26242285, 41987656, 52484570, 104969140, 209938280]

約数ペア:

[(1, 209938280), (2, 104969140), (4, 52484570), (5, 41987656), (8, 26242285), (10, 20993828), (20, 10496914), (40, 5248457), (107, 1962040), (181, 1159880), (214, 981020), (271, 774680), (362, 579940), (428, 490510), (535, 392408), (542, 387340), (724, 289970), (856, 245255), (905, 231976), (1070, 196204), (1084, 193670), (1355, 154936), (1448, 144985), (1810, 115988), (2140, 98102), (2168, 96835), (2710, 77468), (3620, 57994), (4280, 49051), (5420, 38734), (7240, 28997), (10840, 19367)]