56991740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2011}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 130136160

約数和(自身を除く): 73144420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2011, 2180, 2834, 4022, 5668, 7085, 8044, 10055, 14170, 20110, 26143, 28340, 40220, 52286, 104572, 130715, 219199, 261430, 438398, 522860, 876796, 1095995, 2191990, 2849587, 4383980, 5699174, 11398348, 14247935, 28495870, 56991740]

約数ペア:

[(1, 56991740), (2, 28495870), (4, 14247935), (5, 11398348), (10, 5699174), (13, 4383980), (20, 2849587), (26, 2191990), (52, 1095995), (65, 876796), (109, 522860), (130, 438398), (218, 261430), (260, 219199), (436, 130715), (545, 104572), (1090, 52286), (1417, 40220), (2011, 28340), (2180, 26143), (2834, 20110), (4022, 14170), (5668, 10055), (7085, 8044)]