391491280

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1\times {\mathrm{809}}^1$

素因数の和:1108

約数の個数: 80

約数和(自身を含む): 954581760

約数和(自身を除く): 563090480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 263, 368, 460, 526, 809, 920, 1052, 1315, 1618, 1840, 2104, 2630, 3236, 4045, 4208, 5260, 6049, 6472, 8090, 10520, 12098, 12944, 16180, 18607, 21040, 24196, 30245, 32360, 37214, 48392, 60490, 64720, 74428, 93035, 96784, 120980, 148856, 186070, 212767, 241960, 297712, 372140, 425534, 483920, 744280, 851068, 1063835, 1488560, 1702136, 2127670, 3404272, 4255340, 4893641, 8510680, 9787282, 17021360, 19574564, 24468205, 39149128, 48936410, 78298256, 97872820, 195745640, 391491280]

約数ペア:

[(1, 391491280), (2, 195745640), (4, 97872820), (5, 78298256), (8, 48936410), (10, 39149128), (16, 24468205), (20, 19574564), (23, 17021360), (40, 9787282), (46, 8510680), (80, 4893641), (92, 4255340), (115, 3404272), (184, 2127670), (230, 1702136), (263, 1488560), (368, 1063835), (460, 851068), (526, 744280), (809, 483920), (920, 425534), (1052, 372140), (1315, 297712), (1618, 241960), (1840, 212767), (2104, 186070), (2630, 148856), (3236, 120980), (4045, 96784), (4208, 93035), (5260, 74428), (6049, 64720), (6472, 60490), (8090, 48392), (10520, 37214), (12098, 32360), (12944, 30245), (16180, 24196), (18607, 21040)]