20271420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8663}}^1$

素因数の和:8691

約数の個数: 72

約数和(自身を含む): 66227616

約数和(自身を除く): 45956196

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8663, 17326, 25989, 34652, 43315, 51978, 77967, 86630, 103956, 112619, 129945, 155934, 173260, 225238, 259890, 311868, 337857, 389835, 450476, 519780, 563095, 675714, 779670, 1013571, 1126190, 1351428, 1559340, 1689285, 2027142, 2252380, 3378570, 4054284, 5067855, 6757140, 10135710, 20271420]

約数ペア:

[(1, 20271420), (2, 10135710), (3, 6757140), (4, 5067855), (5, 4054284), (6, 3378570), (9, 2252380), (10, 2027142), (12, 1689285), (13, 1559340), (15, 1351428), (18, 1126190), (20, 1013571), (26, 779670), (30, 675714), (36, 563095), (39, 519780), (45, 450476), (52, 389835), (60, 337857), (65, 311868), (78, 259890), (90, 225238), (117, 173260), (130, 155934), (156, 129945), (180, 112619), (195, 103956), (234, 86630), (260, 77967), (390, 51978), (468, 43315), (585, 34652), (780, 25989), (1170, 17326), (2340, 8663)]