28510040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{503}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 69854400

約数和(自身を除く): 41344360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 436, 503, 520, 545, 872, 1006, 1090, 1417, 2012, 2180, 2515, 2834, 4024, 4360, 5030, 5668, 6539, 7085, 10060, 11336, 13078, 14170, 20120, 26156, 28340, 32695, 52312, 54827, 56680, 65390, 109654, 130780, 219308, 261560, 274135, 438616, 548270, 712751, 1096540, 1425502, 2193080, 2851004, 3563755, 5702008, 7127510, 14255020, 28510040]

約数ペア:

[(1, 28510040), (2, 14255020), (4, 7127510), (5, 5702008), (8, 3563755), (10, 2851004), (13, 2193080), (20, 1425502), (26, 1096540), (40, 712751), (52, 548270), (65, 438616), (104, 274135), (109, 261560), (130, 219308), (218, 130780), (260, 109654), (436, 65390), (503, 56680), (520, 54827), (545, 52312), (872, 32695), (1006, 28340), (1090, 26156), (1417, 20120), (2012, 14170), (2180, 13078), (2515, 11336), (2834, 10060), (4024, 7085), (4360, 6539), (5030, 5668)]