20121488

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:915

約数の個数: 40

約数和(自身を含む): 41065080

約数和(自身を除く): 20943592

約数列:

[1, 2, 4, 8, 16, 37, 41, 74, 82, 148, 164, 296, 328, 592, 656, 829, 1517, 1658, 3034, 3316, 6068, 6632, 12136, 13264, 24272, 30673, 33989, 61346, 67978, 122692, 135956, 245384, 271912, 490768, 543824, 1257593, 2515186, 5030372, 10060744, 20121488]

約数ペア:

[(1, 20121488), (2, 10060744), (4, 5030372), (8, 2515186), (16, 1257593), (37, 543824), (41, 490768), (74, 271912), (82, 245384), (148, 135956), (164, 122692), (296, 67978), (328, 61346), (592, 33989), (656, 30673), (829, 24272), (1517, 13264), (1658, 12136), (3034, 6632), (3316, 6068)]