20161218020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{188317}}^1$

素因数の和:188480

約数の個数: 48

約数和(自身を含む): 43564732848

約数和(自身を除く): 23403514828

約数列:

[1, 2, 4, 5, 10, 20, 53, 101, 106, 202, 212, 265, 404, 505, 530, 1010, 1060, 2020, 5353, 10706, 21412, 26765, 53530, 107060, 188317, 376634, 753268, 941585, 1883170, 3766340, 9980801, 19020017, 19961602, 38040034, 39923204, 49904005, 76080068, 95100085, 99808010, 190200170, 199616020, 380400340, 1008060901, 2016121802, 4032243604, 5040304505, 10080609010, 20161218020]

約数ペア:

[(1, 20161218020), (2, 10080609010), (4, 5040304505), (5, 4032243604), (10, 2016121802), (20, 1008060901), (53, 380400340), (101, 199616020), (106, 190200170), (202, 99808010), (212, 95100085), (265, 76080068), (404, 49904005), (505, 39923204), (530, 38040034), (1010, 19961602), (1060, 19020017), (2020, 9980801), (5353, 3766340), (10706, 1883170), (21412, 941585), (26765, 753268), (53530, 376634), (107060, 188317)]