664691872

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{1381}}^1$

素因数の和:1506

約数の個数: 72

約数和(自身を含む): 1433977020

約数和(自身を除く): 769285148

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 169, 178, 208, 338, 356, 416, 676, 712, 1157, 1352, 1381, 1424, 2314, 2704, 2762, 2848, 4628, 5408, 5524, 9256, 11048, 15041, 17953, 18512, 22096, 30082, 35906, 37024, 44192, 60164, 71812, 120328, 122909, 143624, 233389, 240656, 245818, 287248, 466778, 481312, 491636, 574496, 933556, 983272, 1597817, 1867112, 1966544, 3195634, 3734224, 3933088, 6391268, 7468448, 12782536, 20771621, 25565072, 41543242, 51130144, 83086484, 166172968, 332345936, 664691872]

約数ペア:

[(1, 664691872), (2, 332345936), (4, 166172968), (8, 83086484), (13, 51130144), (16, 41543242), (26, 25565072), (32, 20771621), (52, 12782536), (89, 7468448), (104, 6391268), (169, 3933088), (178, 3734224), (208, 3195634), (338, 1966544), (356, 1867112), (416, 1597817), (676, 983272), (712, 933556), (1157, 574496), (1352, 491636), (1381, 481312), (1424, 466778), (2314, 287248), (2704, 245818), (2762, 240656), (2848, 233389), (4628, 143624), (5408, 122909), (5524, 120328), (9256, 71812), (11048, 60164), (15041, 44192), (17953, 37024), (18512, 35906), (22096, 30082)]