21071640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1973}}^1$

素因数の和:2076

約数の個数: 64

約数和(自身を含む): 63957600

約数和(自身を除く): 42885960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 89, 120, 178, 267, 356, 445, 534, 712, 890, 1068, 1335, 1780, 1973, 2136, 2670, 3560, 3946, 5340, 5919, 7892, 9865, 10680, 11838, 15784, 19730, 23676, 29595, 39460, 47352, 59190, 78920, 118380, 175597, 236760, 351194, 526791, 702388, 877985, 1053582, 1404776, 1755970, 2107164, 2633955, 3511940, 4214328, 5267910, 7023880, 10535820, 21071640]

約数ペア:

[(1, 21071640), (2, 10535820), (3, 7023880), (4, 5267910), (5, 4214328), (6, 3511940), (8, 2633955), (10, 2107164), (12, 1755970), (15, 1404776), (20, 1053582), (24, 877985), (30, 702388), (40, 526791), (60, 351194), (89, 236760), (120, 175597), (178, 118380), (267, 78920), (356, 59190), (445, 47352), (534, 39460), (712, 29595), (890, 23676), (1068, 19730), (1335, 15784), (1780, 11838), (1973, 10680), (2136, 9865), (2670, 7892), (3560, 5919), (3946, 5340)]