21865560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{709}}^1$

素因数の和:980

約数の個数: 64

約数和(自身を含む): 65944800

約数和(自身を除く): 44079240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 257, 514, 709, 771, 1028, 1285, 1418, 1542, 2056, 2127, 2570, 2836, 3084, 3545, 3855, 4254, 5140, 5672, 6168, 7090, 7710, 8508, 10280, 10635, 14180, 15420, 17016, 21270, 28360, 30840, 42540, 85080, 182213, 364426, 546639, 728852, 911065, 1093278, 1457704, 1822130, 2186556, 2733195, 3644260, 4373112, 5466390, 7288520, 10932780, 21865560]

約数ペア:

[(1, 21865560), (2, 10932780), (3, 7288520), (4, 5466390), (5, 4373112), (6, 3644260), (8, 2733195), (10, 2186556), (12, 1822130), (15, 1457704), (20, 1093278), (24, 911065), (30, 728852), (40, 546639), (60, 364426), (120, 182213), (257, 85080), (514, 42540), (709, 30840), (771, 28360), (1028, 21270), (1285, 17016), (1418, 15420), (1542, 14180), (2056, 10635), (2127, 10280), (2570, 8508), (2836, 7710), (3084, 7090), (3545, 6168), (3855, 5672), (4254, 5140)]