20549880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4391}}^1$

素因数の和:4421

約数の個数: 96

約数和(自身を含む): 71940960

約数和(自身を除く): 51391080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4391, 4680, 8782, 13173, 17564, 21955, 26346, 35128, 39519, 43910, 52692, 57083, 65865, 79038, 87820, 105384, 114166, 131730, 158076, 171249, 175640, 197595, 228332, 263460, 285415, 316152, 342498, 395190, 456664, 513747, 526920, 570830, 684996, 790380, 856245, 1027494, 1141660, 1369992, 1580760, 1712490, 2054988, 2283320, 2568735, 3424980, 4109976, 5137470, 6849960, 10274940, 20549880]

約数ペア:

[(1, 20549880), (2, 10274940), (3, 6849960), (4, 5137470), (5, 4109976), (6, 3424980), (8, 2568735), (9, 2283320), (10, 2054988), (12, 1712490), (13, 1580760), (15, 1369992), (18, 1141660), (20, 1027494), (24, 856245), (26, 790380), (30, 684996), (36, 570830), (39, 526920), (40, 513747), (45, 456664), (52, 395190), (60, 342498), (65, 316152), (72, 285415), (78, 263460), (90, 228332), (104, 197595), (117, 175640), (120, 171249), (130, 158076), (156, 131730), (180, 114166), (195, 105384), (234, 87820), (260, 79038), (312, 65865), (360, 57083), (390, 52692), (468, 43910), (520, 39519), (585, 35128), (780, 26346), (936, 21955), (1170, 17564), (1560, 13173), (2340, 8782), (4391, 4680)]