28111640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:864

約数の個数: 64

約数和(自身を含む): 68083200

約数和(自身を除く): 39971560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 760, 787, 893, 940, 1574, 1786, 1880, 3148, 3572, 3935, 4465, 6296, 7144, 7870, 8930, 14953, 15740, 17860, 29906, 31480, 35720, 36989, 59812, 73978, 74765, 119624, 147956, 149530, 184945, 295912, 299060, 369890, 598120, 702791, 739780, 1405582, 1479560, 2811164, 3513955, 5622328, 7027910, 14055820, 28111640]

約数ペア:

[(1, 28111640), (2, 14055820), (4, 7027910), (5, 5622328), (8, 3513955), (10, 2811164), (19, 1479560), (20, 1405582), (38, 739780), (40, 702791), (47, 598120), (76, 369890), (94, 299060), (95, 295912), (152, 184945), (188, 149530), (190, 147956), (235, 119624), (376, 74765), (380, 73978), (470, 59812), (760, 36989), (787, 35720), (893, 31480), (940, 29906), (1574, 17860), (1786, 15740), (1880, 14953), (3148, 8930), (3572, 7870), (3935, 7144), (4465, 6296)]