18957195

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 34306272

約数和(自身を除く): 15349077

約数列:

[1, 3, 5, 9, 15, 43, 45, 97, 101, 129, 215, 291, 303, 387, 485, 505, 645, 873, 909, 1455, 1515, 1935, 4171, 4343, 4365, 4545, 9797, 12513, 13029, 20855, 21715, 29391, 37539, 39087, 48985, 62565, 65145, 88173, 146955, 187695, 195435, 421271, 440865, 1263813, 2106355, 3791439, 6319065, 18957195]

約数ペア:

[(1, 18957195), (3, 6319065), (5, 3791439), (9, 2106355), (15, 1263813), (43, 440865), (45, 421271), (97, 195435), (101, 187695), (129, 146955), (215, 88173), (291, 65145), (303, 62565), (387, 48985), (485, 39087), (505, 37539), (645, 29391), (873, 21715), (909, 20855), (1455, 13029), (1515, 12513), (1935, 9797), (4171, 4545), (4343, 4365)]