210813520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61283}}^1$

素因数の和:61339

約数の個数: 40

約数和(自身を含む): 501548256

約数和(自身を除く): 290734736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 61283, 122566, 245132, 306415, 490264, 612830, 980528, 1225660, 2451320, 2635169, 4902640, 5270338, 10540676, 13175845, 21081352, 26351690, 42162704, 52703380, 105406760, 210813520]

約数ペア:

[(1, 210813520), (2, 105406760), (4, 52703380), (5, 42162704), (8, 26351690), (10, 21081352), (16, 13175845), (20, 10540676), (40, 5270338), (43, 4902640), (80, 2635169), (86, 2451320), (172, 1225660), (215, 980528), (344, 612830), (430, 490264), (688, 306415), (860, 245132), (1720, 122566), (3440, 61283)]