18656528

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1493}}^1$

素因数の和:1583

約数の個数: 40

約数和(自身を含む): 40015296

約数和(自身を除く): 21358768

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1493, 1562, 2986, 3124, 5972, 6248, 11944, 12496, 16423, 23888, 32846, 65692, 106003, 131384, 212006, 262768, 424012, 848024, 1166033, 1696048, 2332066, 4664132, 9328264, 18656528]

約数ペア:

[(1, 18656528), (2, 9328264), (4, 4664132), (8, 2332066), (11, 1696048), (16, 1166033), (22, 848024), (44, 424012), (71, 262768), (88, 212006), (142, 131384), (176, 106003), (284, 65692), (568, 32846), (781, 23888), (1136, 16423), (1493, 12496), (1562, 11944), (2986, 6248), (3124, 5972)]