28828520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{691}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 74736000

約数和(自身を除く): 45907480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 691, 745, 1043, 1192, 1382, 1490, 2086, 2764, 2980, 3455, 4172, 4837, 5215, 5528, 5960, 6910, 8344, 9674, 10430, 13820, 19348, 20860, 24185, 27640, 38696, 41720, 48370, 96740, 102959, 193480, 205918, 411836, 514795, 720713, 823672, 1029590, 1441426, 2059180, 2882852, 3603565, 4118360, 5765704, 7207130, 14414260, 28828520]

約数ペア:

[(1, 28828520), (2, 14414260), (4, 7207130), (5, 5765704), (7, 4118360), (8, 3603565), (10, 2882852), (14, 2059180), (20, 1441426), (28, 1029590), (35, 823672), (40, 720713), (56, 514795), (70, 411836), (140, 205918), (149, 193480), (280, 102959), (298, 96740), (596, 48370), (691, 41720), (745, 38696), (1043, 27640), (1192, 24185), (1382, 20860), (1490, 19348), (2086, 13820), (2764, 10430), (2980, 9674), (3455, 8344), (4172, 6910), (4837, 5960), (5215, 5528)]