128220320

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11287}}^1$

素因数の和:11373

約数の個数: 48

約数和(自身を含む): 307214208

約数和(自身を除く): 178993888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11287, 11360, 22574, 45148, 56435, 90296, 112870, 180592, 225740, 361184, 451480, 801377, 902960, 1602754, 1805920, 3205508, 4006885, 6411016, 8013770, 12822032, 16027540, 25644064, 32055080, 64110160, 128220320]

約数ペア:

[(1, 128220320), (2, 64110160), (4, 32055080), (5, 25644064), (8, 16027540), (10, 12822032), (16, 8013770), (20, 6411016), (32, 4006885), (40, 3205508), (71, 1805920), (80, 1602754), (142, 902960), (160, 801377), (284, 451480), (355, 361184), (568, 225740), (710, 180592), (1136, 112870), (1420, 90296), (2272, 56435), (2840, 45148), (5680, 22574), (11287, 11360)]