18933808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{647}}^1$

素因数の和:745

約数の個数: 40

約数和(自身を含む): 38568960

約数和(自身を除く): 19635152

約数列:

[1, 2, 4, 8, 16, 31, 59, 62, 118, 124, 236, 248, 472, 496, 647, 944, 1294, 1829, 2588, 3658, 5176, 7316, 10352, 14632, 20057, 29264, 38173, 40114, 76346, 80228, 152692, 160456, 305384, 320912, 610768, 1183363, 2366726, 4733452, 9466904, 18933808]

約数ペア:

[(1, 18933808), (2, 9466904), (4, 4733452), (8, 2366726), (16, 1183363), (31, 610768), (59, 320912), (62, 305384), (118, 160456), (124, 152692), (236, 80228), (248, 76346), (472, 40114), (496, 38173), (647, 29264), (944, 20057), (1294, 14632), (1829, 10352), (2588, 7316), (3658, 5176)]