18001588

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 36872640

約数和(自身を除く): 18871052

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 61, 76, 122, 209, 244, 353, 418, 671, 706, 836, 1159, 1342, 1412, 2318, 2684, 3883, 4636, 6707, 7766, 12749, 13414, 15532, 21533, 25498, 26828, 43066, 50996, 73777, 86132, 147554, 236863, 295108, 409127, 473726, 818254, 947452, 1636508, 4500397, 9000794, 18001588]

約数ペア:

[(1, 18001588), (2, 9000794), (4, 4500397), (11, 1636508), (19, 947452), (22, 818254), (38, 473726), (44, 409127), (61, 295108), (76, 236863), (122, 147554), (209, 86132), (244, 73777), (353, 50996), (418, 43066), (671, 26828), (706, 25498), (836, 21533), (1159, 15532), (1342, 13414), (1412, 12749), (2318, 7766), (2684, 6707), (3883, 4636)]