261478980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{207523}}^1$

素因数の和:207545

約数の個数: 72

約数和(自身を含む): 906464832

約数和(自身を除く): 644985852

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 207523, 415046, 622569, 830092, 1037615, 1245138, 1452661, 1867707, 2075230, 2490276, 2905322, 3112845, 3735414, 4150460, 4357983, 5810644, 6225690, 7263305, 7470828, 8715966, 9338535, 12451380, 13073949, 14526610, 17431932, 18677070, 21789915, 26147898, 29053220, 37354140, 43579830, 52295796, 65369745, 87159660, 130739490, 261478980]

約数ペア:

[(1, 261478980), (2, 130739490), (3, 87159660), (4, 65369745), (5, 52295796), (6, 43579830), (7, 37354140), (9, 29053220), (10, 26147898), (12, 21789915), (14, 18677070), (15, 17431932), (18, 14526610), (20, 13073949), (21, 12451380), (28, 9338535), (30, 8715966), (35, 7470828), (36, 7263305), (42, 6225690), (45, 5810644), (60, 4357983), (63, 4150460), (70, 3735414), (84, 3112845), (90, 2905322), (105, 2490276), (126, 2075230), (140, 1867707), (180, 1452661), (210, 1245138), (252, 1037615), (315, 830092), (420, 622569), (630, 415046), (1260, 207523)]