21893240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{449}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 52488000

約数和(自身を除く): 30594760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 53, 92, 106, 115, 184, 212, 230, 265, 424, 449, 460, 530, 898, 920, 1060, 1219, 1796, 2120, 2245, 2438, 3592, 4490, 4876, 6095, 8980, 9752, 10327, 12190, 17960, 20654, 23797, 24380, 41308, 47594, 48760, 51635, 82616, 95188, 103270, 118985, 190376, 206540, 237970, 413080, 475940, 547331, 951880, 1094662, 2189324, 2736655, 4378648, 5473310, 10946620, 21893240]

約数ペア:

[(1, 21893240), (2, 10946620), (4, 5473310), (5, 4378648), (8, 2736655), (10, 2189324), (20, 1094662), (23, 951880), (40, 547331), (46, 475940), (53, 413080), (92, 237970), (106, 206540), (115, 190376), (184, 118985), (212, 103270), (230, 95188), (265, 82616), (424, 51635), (449, 48760), (460, 47594), (530, 41308), (898, 24380), (920, 23797), (1060, 20654), (1219, 17960), (1796, 12190), (2120, 10327), (2245, 9752), (2438, 8980), (3592, 6095), (4490, 4876)]