20988084840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2213933}}^1$

素因数の和:2214026

約数の個数: 64

約数和(自身を含む): 63761299200

約数和(自身を除く): 42773214360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2370, 3160, 4740, 9480, 2213933, 4427866, 6641799, 8855732, 11069665, 13283598, 17711464, 22139330, 26567196, 33208995, 44278660, 53134392, 66417990, 88557320, 132835980, 174900707, 265671960, 349801414, 524702121, 699602828, 874503535, 1049404242, 1399205656, 1749007070, 2098808484, 2623510605, 3498014140, 4197616968, 5247021210, 6996028280, 10494042420, 20988084840]

約数ペア:

[(1, 20988084840), (2, 10494042420), (3, 6996028280), (4, 5247021210), (5, 4197616968), (6, 3498014140), (8, 2623510605), (10, 2098808484), (12, 1749007070), (15, 1399205656), (20, 1049404242), (24, 874503535), (30, 699602828), (40, 524702121), (60, 349801414), (79, 265671960), (120, 174900707), (158, 132835980), (237, 88557320), (316, 66417990), (395, 53134392), (474, 44278660), (632, 33208995), (790, 26567196), (948, 22139330), (1185, 17711464), (1580, 13283598), (1896, 11069665), (2370, 8855732), (3160, 6641799), (4740, 4427866), (9480, 2213933)]