20405848

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 43740000

約数和(自身を除く): 23334152

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 53, 68, 76, 106, 136, 149, 152, 212, 298, 323, 424, 596, 646, 901, 1007, 1192, 1292, 1802, 2014, 2533, 2584, 2831, 3604, 4028, 5066, 5662, 7208, 7897, 8056, 10132, 11324, 15794, 17119, 20264, 22648, 31588, 34238, 48127, 63176, 68476, 96254, 134249, 136952, 150043, 192508, 268498, 300086, 385016, 536996, 600172, 1073992, 1200344, 2550731, 5101462, 10202924, 20405848]

約数ペア:

[(1, 20405848), (2, 10202924), (4, 5101462), (8, 2550731), (17, 1200344), (19, 1073992), (34, 600172), (38, 536996), (53, 385016), (68, 300086), (76, 268498), (106, 192508), (136, 150043), (149, 136952), (152, 134249), (212, 96254), (298, 68476), (323, 63176), (424, 48127), (596, 34238), (646, 31588), (901, 22648), (1007, 20264), (1192, 17119), (1292, 15794), (1802, 11324), (2014, 10132), (2533, 8056), (2584, 7897), (2831, 7208), (3604, 5662), (4028, 5066)]