281731875

素因数分解:

$3^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 501439488

約数和(自身を除く): 219707613

約数列:

[1, 3, 5, 15, 25, 31, 37, 75, 93, 111, 125, 131, 155, 185, 375, 393, 465, 555, 625, 655, 775, 925, 1147, 1875, 1965, 2325, 2775, 3275, 3441, 3875, 4061, 4625, 4847, 5735, 9825, 11625, 12183, 13875, 14541, 16375, 17205, 19375, 20305, 23125, 24235, 28675, 49125, 58125, 60915, 69375, 72705, 81875, 86025, 101525, 121175, 143375, 150257, 245625, 304575, 363525, 430125, 450771, 507625, 605875, 716875, 751285, 1522875, 1817625, 2150625, 2253855, 2538125, 3029375, 3756425, 7614375, 9088125, 11269275, 18782125, 56346375, 93910625, 281731875]

約数ペア:

[(1, 281731875), (3, 93910625), (5, 56346375), (15, 18782125), (25, 11269275), (31, 9088125), (37, 7614375), (75, 3756425), (93, 3029375), (111, 2538125), (125, 2253855), (131, 2150625), (155, 1817625), (185, 1522875), (375, 751285), (393, 716875), (465, 605875), (555, 507625), (625, 450771), (655, 430125), (775, 363525), (925, 304575), (1147, 245625), (1875, 150257), (1965, 143375), (2325, 121175), (2775, 101525), (3275, 86025), (3441, 81875), (3875, 72705), (4061, 69375), (4625, 60915), (4847, 58125), (5735, 49125), (9825, 28675), (11625, 24235), (12183, 23125), (13875, 20305), (14541, 19375), (16375, 17205)]