21659560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1858

約数の個数: 64

約数和(自身を含む): 54794880

約数和(自身を除く): 33135320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1811, 2392, 2990, 3622, 5980, 7244, 9055, 11960, 14488, 18110, 23543, 36220, 41653, 47086, 72440, 83306, 94172, 117715, 166612, 188344, 208265, 235430, 333224, 416530, 470860, 541489, 833060, 941720, 1082978, 1666120, 2165956, 2707445, 4331912, 5414890, 10829780, 21659560]

約数ペア:

[(1, 21659560), (2, 10829780), (4, 5414890), (5, 4331912), (8, 2707445), (10, 2165956), (13, 1666120), (20, 1082978), (23, 941720), (26, 833060), (40, 541489), (46, 470860), (52, 416530), (65, 333224), (92, 235430), (104, 208265), (115, 188344), (130, 166612), (184, 117715), (230, 94172), (260, 83306), (299, 72440), (460, 47086), (520, 41653), (598, 36220), (920, 23543), (1196, 18110), (1495, 14488), (1811, 11960), (2392, 9055), (2990, 7244), (3622, 5980)]