20121648040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1039}}^1\times {\mathrm{37243}}^1$

素因数の和:38306

約数の個数: 64

約数和(自身を含む): 48804537600

約数和(自身を除く): 28682889560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1039, 2078, 4156, 5195, 8312, 10390, 13507, 20780, 27014, 37243, 41560, 54028, 67535, 74486, 108056, 135070, 148972, 186215, 270140, 297944, 372430, 484159, 540280, 744860, 968318, 1489720, 1936636, 2420795, 3873272, 4841590, 9683180, 19366360, 38695477, 77390954, 154781908, 193477385, 309563816, 386954770, 503041201, 773909540, 1006082402, 1547819080, 2012164804, 2515206005, 4024329608, 5030412010, 10060824020, 20121648040]

約数ペア:

[(1, 20121648040), (2, 10060824020), (4, 5030412010), (5, 4024329608), (8, 2515206005), (10, 2012164804), (13, 1547819080), (20, 1006082402), (26, 773909540), (40, 503041201), (52, 386954770), (65, 309563816), (104, 193477385), (130, 154781908), (260, 77390954), (520, 38695477), (1039, 19366360), (2078, 9683180), (4156, 4841590), (5195, 3873272), (8312, 2420795), (10390, 1936636), (13507, 1489720), (20780, 968318), (27014, 744860), (37243, 540280), (41560, 484159), (54028, 372430), (67535, 297944), (74486, 270140), (108056, 186215), (135070, 148972)]