20321488

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 46425600

約数和(自身を除く): 26104112

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 59, 76, 88, 103, 118, 152, 176, 206, 209, 236, 304, 412, 418, 472, 649, 824, 836, 944, 1121, 1133, 1298, 1648, 1672, 1957, 2242, 2266, 2596, 3344, 3914, 4484, 4532, 5192, 6077, 7828, 8968, 9064, 10384, 12154, 12331, 15656, 17936, 18128, 21527, 24308, 24662, 31312, 43054, 48616, 49324, 66847, 86108, 97232, 98648, 115463, 133694, 172216, 197296, 230926, 267388, 344432, 461852, 534776, 923704, 1069552, 1270093, 1847408, 2540186, 5080372, 10160744, 20321488]

約数ペア:

[(1, 20321488), (2, 10160744), (4, 5080372), (8, 2540186), (11, 1847408), (16, 1270093), (19, 1069552), (22, 923704), (38, 534776), (44, 461852), (59, 344432), (76, 267388), (88, 230926), (103, 197296), (118, 172216), (152, 133694), (176, 115463), (206, 98648), (209, 97232), (236, 86108), (304, 66847), (412, 49324), (418, 48616), (472, 43054), (649, 31312), (824, 24662), (836, 24308), (944, 21527), (1121, 18128), (1133, 17936), (1298, 15656), (1648, 12331), (1672, 12154), (1957, 10384), (2242, 9064), (2266, 8968), (2596, 7828), (3344, 6077), (3914, 5192), (4484, 4532)]