20381910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 31319850

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 109, 115, 138, 218, 230, 271, 327, 345, 542, 545, 654, 690, 813, 1090, 1355, 1626, 1635, 2507, 2710, 3270, 4065, 5014, 6233, 7521, 8130, 12466, 12535, 15042, 18699, 25070, 29539, 31165, 37398, 37605, 59078, 62330, 75210, 88617, 93495, 147695, 177234, 186990, 295390, 443085, 679397, 886170, 1358794, 2038191, 3396985, 4076382, 6793970, 10190955, 20381910]

約数ペア:

[(1, 20381910), (2, 10190955), (3, 6793970), (5, 4076382), (6, 3396985), (10, 2038191), (15, 1358794), (23, 886170), (30, 679397), (46, 443085), (69, 295390), (109, 186990), (115, 177234), (138, 147695), (218, 93495), (230, 88617), (271, 75210), (327, 62330), (345, 59078), (542, 37605), (545, 37398), (654, 31165), (690, 29539), (813, 25070), (1090, 18699), (1355, 15042), (1626, 12535), (1635, 12466), (2507, 8130), (2710, 7521), (3270, 6233), (4065, 5014)]