21271560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1721}}^1$

素因数の和:1838

約数の個数: 64

約数和(自身を含む): 64471680

約数和(自身を除く): 43200120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 103, 120, 206, 309, 412, 515, 618, 824, 1030, 1236, 1545, 1721, 2060, 2472, 3090, 3442, 4120, 5163, 6180, 6884, 8605, 10326, 12360, 13768, 17210, 20652, 25815, 34420, 41304, 51630, 68840, 103260, 177263, 206520, 354526, 531789, 709052, 886315, 1063578, 1418104, 1772630, 2127156, 2658945, 3545260, 4254312, 5317890, 7090520, 10635780, 21271560]

約数ペア:

[(1, 21271560), (2, 10635780), (3, 7090520), (4, 5317890), (5, 4254312), (6, 3545260), (8, 2658945), (10, 2127156), (12, 1772630), (15, 1418104), (20, 1063578), (24, 886315), (30, 709052), (40, 531789), (60, 354526), (103, 206520), (120, 177263), (206, 103260), (309, 68840), (412, 51630), (515, 41304), (618, 34420), (824, 25815), (1030, 20652), (1236, 17210), (1545, 13768), (1721, 12360), (2060, 10326), (2472, 8605), (3090, 6884), (3442, 6180), (4120, 5163)]