81379875

素因数分解:

$3^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 142571520

約数和(自身を除く): 61191645

約数列:

[1, 3, 5, 15, 25, 41, 67, 75, 79, 123, 125, 201, 205, 237, 335, 375, 395, 615, 1005, 1025, 1185, 1675, 1975, 2747, 3075, 3239, 5025, 5125, 5293, 5925, 8241, 8375, 9717, 9875, 13735, 15375, 15879, 16195, 25125, 26465, 29625, 41205, 48585, 68675, 79395, 80975, 132325, 206025, 217013, 242925, 343375, 396975, 404875, 651039, 661625, 1030125, 1085065, 1214625, 1984875, 3255195, 5425325, 16275975, 27126625, 81379875]

約数ペア:

[(1, 81379875), (3, 27126625), (5, 16275975), (15, 5425325), (25, 3255195), (41, 1984875), (67, 1214625), (75, 1085065), (79, 1030125), (123, 661625), (125, 651039), (201, 404875), (205, 396975), (237, 343375), (335, 242925), (375, 217013), (395, 206025), (615, 132325), (1005, 80975), (1025, 79395), (1185, 68675), (1675, 48585), (1975, 41205), (2747, 29625), (3075, 26465), (3239, 25125), (5025, 16195), (5125, 15879), (5293, 15375), (5925, 13735), (8241, 9875), (8375, 9717)]