21558540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18911}}^1$

素因数の和:18942

約数の個数: 48

約数和(自身を含む): 63544320

約数和(自身を除く): 41985780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18911, 37822, 56733, 75644, 94555, 113466, 189110, 226932, 283665, 359309, 378220, 567330, 718618, 1077927, 1134660, 1437236, 1796545, 2155854, 3593090, 4311708, 5389635, 7186180, 10779270, 21558540]

約数ペア:

[(1, 21558540), (2, 10779270), (3, 7186180), (4, 5389635), (5, 4311708), (6, 3593090), (10, 2155854), (12, 1796545), (15, 1437236), (19, 1134660), (20, 1077927), (30, 718618), (38, 567330), (57, 378220), (60, 359309), (76, 283665), (95, 226932), (114, 189110), (190, 113466), (228, 94555), (285, 75644), (380, 56733), (570, 37822), (1140, 18911)]