21958875

素因数分解:

$3^2\times 5^3\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:301

約数の個数: 48

約数和(自身を含む): 40154400

約数和(自身を除く): 18195525

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 131, 149, 225, 375, 393, 447, 655, 745, 1125, 1179, 1341, 1965, 2235, 3275, 3725, 5895, 6705, 9825, 11175, 16375, 18625, 19519, 29475, 33525, 49125, 55875, 58557, 97595, 147375, 167625, 175671, 292785, 487975, 878355, 1463925, 2439875, 4391775, 7319625, 21958875]

約数ペア:

[(1, 21958875), (3, 7319625), (5, 4391775), (9, 2439875), (15, 1463925), (25, 878355), (45, 487975), (75, 292785), (125, 175671), (131, 167625), (149, 147375), (225, 97595), (375, 58557), (393, 55875), (447, 49125), (655, 33525), (745, 29475), (1125, 19519), (1179, 18625), (1341, 16375), (1965, 11175), (2235, 9825), (3275, 6705), (3725, 5895)]