646562020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7699}}^1$

素因数の和:7757

約数の個数: 96

約数和(自身を含む): 1629936000

約数和(自身を除く): 983373980

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 130, 170, 190, 221, 247, 260, 323, 340, 380, 442, 494, 646, 884, 988, 1105, 1235, 1292, 1615, 2210, 2470, 3230, 4199, 4420, 4940, 6460, 7699, 8398, 15398, 16796, 20995, 30796, 38495, 41990, 76990, 83980, 100087, 130883, 146281, 153980, 200174, 261766, 292562, 400348, 500435, 523532, 585124, 654415, 731405, 1000870, 1308830, 1462810, 1701479, 1901653, 2001740, 2486777, 2617660, 2925620, 3402958, 3803306, 4973554, 6805916, 7606612, 8507395, 9508265, 9947108, 12433885, 17014790, 19016530, 24867770, 32328101, 34029580, 38033060, 49735540, 64656202, 129312404, 161640505, 323281010, 646562020]

約数ペア:

[(1, 646562020), (2, 323281010), (4, 161640505), (5, 129312404), (10, 64656202), (13, 49735540), (17, 38033060), (19, 34029580), (20, 32328101), (26, 24867770), (34, 19016530), (38, 17014790), (52, 12433885), (65, 9947108), (68, 9508265), (76, 8507395), (85, 7606612), (95, 6805916), (130, 4973554), (170, 3803306), (190, 3402958), (221, 2925620), (247, 2617660), (260, 2486777), (323, 2001740), (340, 1901653), (380, 1701479), (442, 1462810), (494, 1308830), (646, 1000870), (884, 731405), (988, 654415), (1105, 585124), (1235, 523532), (1292, 500435), (1615, 400348), (2210, 292562), (2470, 261766), (3230, 200174), (4199, 153980), (4420, 146281), (4940, 130883), (6460, 100087), (7699, 83980), (8398, 76990), (15398, 41990), (16796, 38495), (20995, 30796)]