639452008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{3581}}^1$

素因数の和:3718

約数の個数: 64

約数和(自身を含む): 1381075920

約数和(自身を除く): 741623912

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 101, 104, 136, 202, 221, 404, 442, 808, 884, 1313, 1717, 1768, 2626, 3434, 3581, 5252, 6868, 7162, 10504, 13736, 14324, 22321, 28648, 44642, 46553, 60877, 89284, 93106, 121754, 178568, 186212, 243508, 361681, 372424, 487016, 723362, 791401, 1446724, 1582802, 2893448, 3165604, 4701853, 6148577, 6331208, 9403706, 12297154, 18807412, 24594308, 37614824, 49188616, 79931501, 159863002, 319726004, 639452008]

約数ペア:

[(1, 639452008), (2, 319726004), (4, 159863002), (8, 79931501), (13, 49188616), (17, 37614824), (26, 24594308), (34, 18807412), (52, 12297154), (68, 9403706), (101, 6331208), (104, 6148577), (136, 4701853), (202, 3165604), (221, 2893448), (404, 1582802), (442, 1446724), (808, 791401), (884, 723362), (1313, 487016), (1717, 372424), (1768, 361681), (2626, 243508), (3434, 186212), (3581, 178568), (5252, 121754), (6868, 93106), (7162, 89284), (10504, 60877), (13736, 46553), (14324, 44642), (22321, 28648)]