19657125

素因数分解:

$3^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 35992944

約数和(自身を除く): 16335819

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 101, 125, 173, 225, 303, 375, 505, 519, 865, 909, 1125, 1515, 1557, 2525, 2595, 4325, 4545, 7575, 7785, 12625, 12975, 17473, 21625, 22725, 37875, 38925, 52419, 64875, 87365, 113625, 157257, 194625, 262095, 436825, 786285, 1310475, 2184125, 3931425, 6552375, 19657125]

約数ペア:

[(1, 19657125), (3, 6552375), (5, 3931425), (9, 2184125), (15, 1310475), (25, 786285), (45, 436825), (75, 262095), (101, 194625), (125, 157257), (173, 113625), (225, 87365), (303, 64875), (375, 52419), (505, 38925), (519, 37875), (865, 22725), (909, 21625), (1125, 17473), (1515, 12975), (1557, 12625), (2525, 7785), (2595, 7575), (4325, 4545)]