18966688

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{359}}^1$

素因数の和:509

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 21675872

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 127, 208, 254, 359, 416, 508, 718, 1016, 1436, 1651, 2032, 2872, 3302, 4064, 4667, 5744, 6604, 9334, 11488, 13208, 18668, 26416, 37336, 45593, 52832, 74672, 91186, 149344, 182372, 364744, 592709, 729488, 1185418, 1458976, 2370836, 4741672, 9483344, 18966688]

約数ペア:

[(1, 18966688), (2, 9483344), (4, 4741672), (8, 2370836), (13, 1458976), (16, 1185418), (26, 729488), (32, 592709), (52, 364744), (104, 182372), (127, 149344), (208, 91186), (254, 74672), (359, 52832), (416, 45593), (508, 37336), (718, 26416), (1016, 18668), (1436, 13208), (1651, 11488), (2032, 9334), (2872, 6604), (3302, 5744), (4064, 4667)]