640796784

素因数分解:

$2^4\times 3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:295

約数の個数: 160

約数和(自身を含む): 1787695104

約数和(自身を除く): 1146898320

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 37, 48, 62, 74, 93, 103, 111, 113, 124, 148, 186, 206, 222, 226, 248, 296, 309, 339, 372, 412, 444, 452, 496, 592, 618, 678, 744, 824, 888, 904, 1147, 1236, 1356, 1488, 1648, 1776, 1808, 2294, 2472, 2712, 3193, 3441, 3503, 3811, 4181, 4588, 4944, 5424, 6386, 6882, 7006, 7622, 8362, 9176, 9579, 10509, 11433, 11639, 12543, 12772, 13764, 14012, 15244, 16724, 18352, 19158, 21018, 22866, 23278, 25086, 25544, 27528, 28024, 30488, 33448, 34917, 38316, 42036, 45732, 46556, 50172, 51088, 55056, 56048, 60976, 66896, 69834, 76632, 84072, 91464, 93112, 100344, 118141, 129611, 139668, 153264, 168144, 182928, 186224, 200688, 236282, 259222, 279336, 354423, 360809, 388833, 430643, 472564, 518444, 558672, 708846, 721618, 777666, 861286, 945128, 1036888, 1082427, 1291929, 1417692, 1443236, 1555332, 1722572, 1890256, 2073776, 2164854, 2583858, 2835384, 2886472, 3110664, 3445144, 4329708, 5167716, 5670768, 5772944, 6221328, 6890288, 8659416, 10335432, 13349933, 17318832, 20670864, 26699866, 40049799, 53399732, 80099598, 106799464, 160199196, 213598928, 320398392, 640796784]

約数ペア:

[(1, 640796784), (2, 320398392), (3, 213598928), (4, 160199196), (6, 106799464), (8, 80099598), (12, 53399732), (16, 40049799), (24, 26699866), (31, 20670864), (37, 17318832), (48, 13349933), (62, 10335432), (74, 8659416), (93, 6890288), (103, 6221328), (111, 5772944), (113, 5670768), (124, 5167716), (148, 4329708), (186, 3445144), (206, 3110664), (222, 2886472), (226, 2835384), (248, 2583858), (296, 2164854), (309, 2073776), (339, 1890256), (372, 1722572), (412, 1555332), (444, 1443236), (452, 1417692), (496, 1291929), (592, 1082427), (618, 1036888), (678, 945128), (744, 861286), (824, 777666), (888, 721618), (904, 708846), (1147, 558672), (1236, 518444), (1356, 472564), (1488, 430643), (1648, 388833), (1776, 360809), (1808, 354423), (2294, 279336), (2472, 259222), (2712, 236282), (3193, 200688), (3441, 186224), (3503, 182928), (3811, 168144), (4181, 153264), (4588, 139668), (4944, 129611), (5424, 118141), (6386, 100344), (6882, 93112), (7006, 91464), (7622, 84072), (8362, 76632), (9176, 69834), (9579, 66896), (10509, 60976), (11433, 56048), (11639, 55056), (12543, 51088), (12772, 50172), (13764, 46556), (14012, 45732), (15244, 42036), (16724, 38316), (18352, 34917), (19158, 33448), (21018, 30488), (22866, 28024), (23278, 27528), (25086, 25544)]