21439320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25523}}^1$

素因数の和:25544

約数の個数: 64

約数和(自身を含む): 73509120

約数和(自身を除く): 52069800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25523, 51046, 76569, 102092, 127615, 153138, 178661, 204184, 255230, 306276, 357322, 382845, 510460, 535983, 612552, 714644, 765690, 893305, 1020920, 1071966, 1429288, 1531380, 1786610, 2143932, 2679915, 3062760, 3573220, 4287864, 5359830, 7146440, 10719660, 21439320]

約数ペア:

[(1, 21439320), (2, 10719660), (3, 7146440), (4, 5359830), (5, 4287864), (6, 3573220), (7, 3062760), (8, 2679915), (10, 2143932), (12, 1786610), (14, 1531380), (15, 1429288), (20, 1071966), (21, 1020920), (24, 893305), (28, 765690), (30, 714644), (35, 612552), (40, 535983), (42, 510460), (56, 382845), (60, 357322), (70, 306276), (84, 255230), (105, 204184), (120, 178661), (140, 153138), (168, 127615), (210, 102092), (280, 76569), (420, 51046), (840, 25523)]