81377325

素因数分解:

$3^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3889}}^1$

素因数の和:3939

約数の個数: 48

約数和(自身を含む): 154355200

約数和(自身を除く): 72977875

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 93, 135, 155, 225, 279, 465, 675, 775, 837, 1395, 2325, 3889, 4185, 6975, 11667, 19445, 20925, 35001, 58335, 97225, 105003, 120559, 175005, 291675, 361677, 525015, 602795, 875025, 1085031, 1808385, 2625075, 3013975, 3255093, 5425155, 9041925, 16275465, 27125775, 81377325]

約数ペア:

[(1, 81377325), (3, 27125775), (5, 16275465), (9, 9041925), (15, 5425155), (25, 3255093), (27, 3013975), (31, 2625075), (45, 1808385), (75, 1085031), (93, 875025), (135, 602795), (155, 525015), (225, 361677), (279, 291675), (465, 175005), (675, 120559), (775, 105003), (837, 97225), (1395, 58335), (2325, 35001), (3889, 20925), (4185, 19445), (6975, 11667)]