21903240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{523}}^1$

素因数の和:886

約数の個数: 64

約数和(自身を含む): 66024000

約数和(自身を除く): 44120760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 349, 523, 698, 1046, 1047, 1396, 1569, 1745, 2092, 2094, 2615, 2792, 3138, 3490, 4184, 4188, 5230, 5235, 6276, 6980, 7845, 8376, 10460, 10470, 12552, 13960, 15690, 20920, 20940, 31380, 41880, 62760, 182527, 365054, 547581, 730108, 912635, 1095162, 1460216, 1825270, 2190324, 2737905, 3650540, 4380648, 5475810, 7301080, 10951620, 21903240]

約数ペア:

[(1, 21903240), (2, 10951620), (3, 7301080), (4, 5475810), (5, 4380648), (6, 3650540), (8, 2737905), (10, 2190324), (12, 1825270), (15, 1460216), (20, 1095162), (24, 912635), (30, 730108), (40, 547581), (60, 365054), (120, 182527), (349, 62760), (523, 41880), (698, 31380), (1046, 20940), (1047, 20920), (1396, 15690), (1569, 13960), (1745, 12552), (2092, 10470), (2094, 10460), (2615, 8376), (2792, 7845), (3138, 6980), (3490, 6276), (4184, 5235), (4188, 5230)]