278194140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{220789}}^1$

素因数の和:220811

約数の個数: 72

約数和(自身を含む): 964410720

約数和(自身を除く): 686216580

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, 220789, 441578, 662367, 883156, 1103945, 1324734, 1545523, 1987101, 2207890, 2649468, 3091046, 3311835, 3974202, 4415780, 4636569, 6182092, 6623670, 7727615, 7948404, 9273138, 9935505, 13247340, 13909707, 15455230, 18546276, 19871010, 23182845, 27819414, 30910460, 39742020, 46365690, 55638828, 69548535, 92731380, 139097070, 278194140]

約数ペア:

[(1, 278194140), (2, 139097070), (3, 92731380), (4, 69548535), (5, 55638828), (6, 46365690), (7, 39742020), (9, 30910460), (10, 27819414), (12, 23182845), (14, 19871010), (15, 18546276), (18, 15455230), (20, 13909707), (21, 13247340), (28, 9935505), (30, 9273138), (35, 7948404), (36, 7727615), (42, 6623670), (45, 6182092), (60, 4636569), (63, 4415780), (70, 3974202), (84, 3311835), (90, 3091046), (105, 2649468), (126, 2207890), (140, 1987101), (180, 1545523), (210, 1324734), (252, 1103945), (315, 883156), (420, 662367), (630, 441578), (1260, 220789)]