81001060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:397

約数の個数: 96

約数和(自身を含む): 204664320

約数和(自身を除く): 123663260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 71, 116, 140, 142, 145, 203, 281, 284, 290, 355, 406, 497, 562, 580, 710, 812, 994, 1015, 1124, 1405, 1420, 1967, 1988, 2030, 2059, 2485, 2810, 3934, 4060, 4118, 4970, 5620, 7868, 8149, 8236, 9835, 9940, 10295, 14413, 16298, 19670, 19951, 20590, 28826, 32596, 39340, 39902, 40745, 41180, 57043, 57652, 72065, 79804, 81490, 99755, 114086, 139657, 144130, 162980, 199510, 228172, 279314, 285215, 288260, 399020, 558628, 570430, 578579, 698285, 1140860, 1157158, 1396570, 2314316, 2793140, 2892895, 4050053, 5785790, 8100106, 11571580, 16200212, 20250265, 40500530, 81001060]

約数ペア:

[(1, 81001060), (2, 40500530), (4, 20250265), (5, 16200212), (7, 11571580), (10, 8100106), (14, 5785790), (20, 4050053), (28, 2892895), (29, 2793140), (35, 2314316), (58, 1396570), (70, 1157158), (71, 1140860), (116, 698285), (140, 578579), (142, 570430), (145, 558628), (203, 399020), (281, 288260), (284, 285215), (290, 279314), (355, 228172), (406, 199510), (497, 162980), (562, 144130), (580, 139657), (710, 114086), (812, 99755), (994, 81490), (1015, 79804), (1124, 72065), (1405, 57652), (1420, 57043), (1967, 41180), (1988, 40745), (2030, 39902), (2059, 39340), (2485, 32596), (2810, 28826), (3934, 20590), (4060, 19951), (4118, 19670), (4970, 16298), (5620, 14413), (7868, 10295), (8149, 9940), (8236, 9835)]