820042360

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1\times {\mathrm{617}}^1$

素因数の和:1000

約数の個数: 64

約数和(自身を含む): 1868832000

約数和(自身を除く): 1048789640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 223, 298, 446, 596, 617, 745, 892, 1115, 1192, 1234, 1490, 1784, 2230, 2468, 2980, 3085, 4460, 4936, 5960, 6170, 8920, 12340, 24680, 33227, 66454, 91933, 132908, 137591, 166135, 183866, 265816, 275182, 332270, 367732, 459665, 550364, 664540, 687955, 735464, 919330, 1100728, 1329080, 1375910, 1838660, 2751820, 3677320, 5503640, 20501059, 41002118, 82004236, 102505295, 164008472, 205010590, 410021180, 820042360]

約数ペア:

[(1, 820042360), (2, 410021180), (4, 205010590), (5, 164008472), (8, 102505295), (10, 82004236), (20, 41002118), (40, 20501059), (149, 5503640), (223, 3677320), (298, 2751820), (446, 1838660), (596, 1375910), (617, 1329080), (745, 1100728), (892, 919330), (1115, 735464), (1192, 687955), (1234, 664540), (1490, 550364), (1784, 459665), (2230, 367732), (2468, 332270), (2980, 275182), (3085, 265816), (4460, 183866), (4936, 166135), (5960, 137591), (6170, 132908), (8920, 91933), (12340, 66454), (24680, 33227)]