20967240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:359

約数の個数: 128

約数和(自身を含む): 72864000

約数和(自身を除く): 51896760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 109, 120, 140, 168, 210, 218, 229, 280, 327, 420, 436, 458, 545, 654, 687, 763, 840, 872, 916, 1090, 1145, 1308, 1374, 1526, 1603, 1635, 1832, 2180, 2289, 2290, 2616, 2748, 3052, 3206, 3270, 3435, 3815, 4360, 4578, 4580, 4809, 5496, 6104, 6412, 6540, 6870, 7630, 8015, 9156, 9160, 9618, 11445, 12824, 13080, 13740, 15260, 16030, 18312, 19236, 22890, 24045, 24961, 27480, 30520, 32060, 38472, 45780, 48090, 49922, 64120, 74883, 91560, 96180, 99844, 124805, 149766, 174727, 192360, 199688, 249610, 299532, 349454, 374415, 499220, 524181, 599064, 698908, 748830, 873635, 998440, 1048362, 1397816, 1497660, 1747270, 2096724, 2620905, 2995320, 3494540, 4193448, 5241810, 6989080, 10483620, 20967240]

約数ペア:

[(1, 20967240), (2, 10483620), (3, 6989080), (4, 5241810), (5, 4193448), (6, 3494540), (7, 2995320), (8, 2620905), (10, 2096724), (12, 1747270), (14, 1497660), (15, 1397816), (20, 1048362), (21, 998440), (24, 873635), (28, 748830), (30, 698908), (35, 599064), (40, 524181), (42, 499220), (56, 374415), (60, 349454), (70, 299532), (84, 249610), (105, 199688), (109, 192360), (120, 174727), (140, 149766), (168, 124805), (210, 99844), (218, 96180), (229, 91560), (280, 74883), (327, 64120), (420, 49922), (436, 48090), (458, 45780), (545, 38472), (654, 32060), (687, 30520), (763, 27480), (840, 24961), (872, 24045), (916, 22890), (1090, 19236), (1145, 18312), (1308, 16030), (1374, 15260), (1526, 13740), (1603, 13080), (1635, 12824), (1832, 11445), (2180, 9618), (2289, 9160), (2290, 9156), (2616, 8015), (2748, 7630), (3052, 6870), (3206, 6540), (3270, 6412), (3435, 6104), (3815, 5496), (4360, 4809), (4578, 4580)]