21542625

素因数分解:

$3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 42981120

約数和(自身を除く): 21438495

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 125, 135, 195, 225, 325, 351, 375, 491, 585, 675, 975, 1125, 1473, 1625, 1755, 2455, 2925, 3375, 4419, 4875, 6383, 7365, 8775, 12275, 13257, 14625, 19149, 22095, 31915, 36825, 43875, 57447, 61375, 66285, 95745, 110475, 159575, 172341, 184125, 287235, 331425, 478725, 552375, 797875, 861705, 1436175, 1657125, 2393625, 4308525, 7180875, 21542625]

約数ペア:

[(1, 21542625), (3, 7180875), (5, 4308525), (9, 2393625), (13, 1657125), (15, 1436175), (25, 861705), (27, 797875), (39, 552375), (45, 478725), (65, 331425), (75, 287235), (117, 184125), (125, 172341), (135, 159575), (195, 110475), (225, 95745), (325, 66285), (351, 61375), (375, 57447), (491, 43875), (585, 36825), (675, 31915), (975, 22095), (1125, 19149), (1473, 14625), (1625, 13257), (1755, 12275), (2455, 8775), (2925, 7365), (3375, 6383), (4419, 4875)]