8578220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{863}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 20901888

約数和(自身を除く): 12323668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 863, 994, 1420, 1726, 1988, 2485, 3452, 4315, 4970, 6041, 8630, 9940, 12082, 17260, 24164, 30205, 60410, 61273, 120820, 122546, 245092, 306365, 428911, 612730, 857822, 1225460, 1715644, 2144555, 4289110, 8578220]

約数ペア:

[(1, 8578220), (2, 4289110), (4, 2144555), (5, 1715644), (7, 1225460), (10, 857822), (14, 612730), (20, 428911), (28, 306365), (35, 245092), (70, 122546), (71, 120820), (140, 61273), (142, 60410), (284, 30205), (355, 24164), (497, 17260), (710, 12082), (863, 9940), (994, 8630), (1420, 6041), (1726, 4970), (1988, 4315), (2485, 3452)]