285787450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1091}}^1$

素因数の和:1160

約数の個数: 72

約数和(自身を含む): 594711936

約数和(自身を除く): 308924486

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 169, 310, 325, 338, 403, 650, 775, 806, 845, 1091, 1550, 1690, 2015, 2182, 4030, 4225, 5239, 5455, 8450, 10075, 10478, 10910, 14183, 20150, 26195, 27275, 28366, 33821, 52390, 54550, 67642, 70915, 130975, 141830, 169105, 184379, 261950, 338210, 354575, 368758, 439673, 709150, 845525, 879346, 921895, 1691050, 1843790, 2198365, 4396730, 4609475, 5715749, 9218950, 10991825, 11431498, 21983650, 28578745, 57157490, 142893725, 285787450]

約数ペア:

[(1, 285787450), (2, 142893725), (5, 57157490), (10, 28578745), (13, 21983650), (25, 11431498), (26, 10991825), (31, 9218950), (50, 5715749), (62, 4609475), (65, 4396730), (130, 2198365), (155, 1843790), (169, 1691050), (310, 921895), (325, 879346), (338, 845525), (403, 709150), (650, 439673), (775, 368758), (806, 354575), (845, 338210), (1091, 261950), (1550, 184379), (1690, 169105), (2015, 141830), (2182, 130975), (4030, 70915), (4225, 67642), (5239, 54550), (5455, 52390), (8450, 33821), (10075, 28366), (10478, 27275), (10910, 26195), (14183, 20150)]