20818440

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{57829}}^1$

素因数の和:57846

約数の個数: 48

約数和(自身を含む): 67661100

約数和(自身を除く): 46842660

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 57829, 115658, 173487, 231316, 289145, 346974, 462632, 520461, 578290, 693948, 867435, 1040922, 1156580, 1387896, 1734870, 2081844, 2313160, 2602305, 3469740, 4163688, 5204610, 6939480, 10409220, 20818440]

約数ペア:

[(1, 20818440), (2, 10409220), (3, 6939480), (4, 5204610), (5, 4163688), (6, 3469740), (8, 2602305), (9, 2313160), (10, 2081844), (12, 1734870), (15, 1387896), (18, 1156580), (20, 1040922), (24, 867435), (30, 693948), (36, 578290), (40, 520461), (45, 462632), (60, 346974), (72, 289145), (90, 231316), (120, 173487), (180, 115658), (360, 57829)]