20807940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1439}}^1$

素因数の和:1692

約数の個数: 48

約数和(自身を含む): 58544640

約数和(自身を除く): 37736700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 241, 482, 723, 964, 1205, 1439, 1446, 2410, 2878, 2892, 3615, 4317, 4820, 5756, 7195, 7230, 8634, 14390, 14460, 17268, 21585, 28780, 43170, 86340, 346799, 693598, 1040397, 1387196, 1733995, 2080794, 3467990, 4161588, 5201985, 6935980, 10403970, 20807940]

約数ペア:

[(1, 20807940), (2, 10403970), (3, 6935980), (4, 5201985), (5, 4161588), (6, 3467990), (10, 2080794), (12, 1733995), (15, 1387196), (20, 1040397), (30, 693598), (60, 346799), (241, 86340), (482, 43170), (723, 28780), (964, 21585), (1205, 17268), (1439, 14460), (1446, 14390), (2410, 8634), (2878, 7230), (2892, 7195), (3615, 5756), (4317, 4820)]