218879480

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{61483}}^1$

素因数の和:61583

約数の個数: 32

約数和(自身を含む): 498020400

約数和(自身を除く): 279140920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 61483, 122966, 245932, 307415, 491864, 614830, 1229660, 2459320, 5471987, 10943974, 21887948, 27359935, 43775896, 54719870, 109439740, 218879480]

約数ペア:

[(1, 218879480), (2, 109439740), (4, 54719870), (5, 43775896), (8, 27359935), (10, 21887948), (20, 10943974), (40, 5471987), (89, 2459320), (178, 1229660), (356, 614830), (445, 491864), (712, 307415), (890, 245932), (1780, 122966), (3560, 61483)]