78240920

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{4243}}^1$

素因数の和:4715

約数の個数: 32

約数和(自身を含む): 176465520

約数和(自身を除く): 98224600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 4243, 4610, 8486, 9220, 16972, 18440, 21215, 33944, 42430, 84860, 169720, 1956023, 3912046, 7824092, 9780115, 15648184, 19560230, 39120460, 78240920]

約数ペア:

[(1, 78240920), (2, 39120460), (4, 19560230), (5, 15648184), (8, 9780115), (10, 7824092), (20, 3912046), (40, 1956023), (461, 169720), (922, 84860), (1844, 42430), (2305, 33944), (3688, 21215), (4243, 18440), (4610, 16972), (8486, 9220)]