21270288

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{383}}^1$

素因数の和:496

約数の個数: 80

約数和(自身を含む): 59996160

約数和(自身を除く): 38725872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 89, 104, 156, 178, 208, 267, 312, 356, 383, 534, 624, 712, 766, 1068, 1149, 1157, 1424, 1532, 2136, 2298, 2314, 3064, 3471, 4272, 4596, 4628, 4979, 6128, 6942, 9192, 9256, 9958, 13884, 14937, 18384, 18512, 19916, 27768, 29874, 34087, 39832, 55536, 59748, 68174, 79664, 102261, 119496, 136348, 204522, 238992, 272696, 409044, 443131, 545392, 818088, 886262, 1329393, 1636176, 1772524, 2658786, 3545048, 5317572, 7090096, 10635144, 21270288]

約数ペア:

[(1, 21270288), (2, 10635144), (3, 7090096), (4, 5317572), (6, 3545048), (8, 2658786), (12, 1772524), (13, 1636176), (16, 1329393), (24, 886262), (26, 818088), (39, 545392), (48, 443131), (52, 409044), (78, 272696), (89, 238992), (104, 204522), (156, 136348), (178, 119496), (208, 102261), (267, 79664), (312, 68174), (356, 59748), (383, 55536), (534, 39832), (624, 34087), (712, 29874), (766, 27768), (1068, 19916), (1149, 18512), (1157, 18384), (1424, 14937), (1532, 13884), (2136, 9958), (2298, 9256), (2314, 9192), (3064, 6942), (3471, 6128), (4272, 4979), (4596, 4628)]