256237072

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:877

約数の個数: 120

約数和(自身を含む): 642792192

約数和(自身を除く): 386555120

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 49, 52, 56, 62, 91, 98, 104, 112, 124, 182, 196, 208, 217, 248, 364, 392, 403, 434, 496, 637, 728, 784, 806, 811, 868, 1274, 1456, 1519, 1612, 1622, 1736, 2548, 2821, 3038, 3224, 3244, 3472, 5096, 5642, 5677, 6076, 6448, 6488, 10192, 10543, 11284, 11354, 12152, 12976, 19747, 21086, 22568, 22708, 24304, 25141, 39494, 39739, 42172, 45136, 45416, 50282, 73801, 78988, 79478, 84344, 90832, 100564, 147602, 157976, 158956, 168688, 175987, 201128, 295204, 315952, 317912, 326833, 351974, 402256, 516607, 590408, 635824, 653666, 703948, 1033214, 1180816, 1231909, 1307332, 1407896, 2066428, 2287831, 2463818, 2614664, 2815792, 4132856, 4575662, 4927636, 5229328, 8265712, 9151324, 9855272, 16014817, 18302648, 19710544, 32029634, 36605296, 64059268, 128118536, 256237072]

約数ペア:

[(1, 256237072), (2, 128118536), (4, 64059268), (7, 36605296), (8, 32029634), (13, 19710544), (14, 18302648), (16, 16014817), (26, 9855272), (28, 9151324), (31, 8265712), (49, 5229328), (52, 4927636), (56, 4575662), (62, 4132856), (91, 2815792), (98, 2614664), (104, 2463818), (112, 2287831), (124, 2066428), (182, 1407896), (196, 1307332), (208, 1231909), (217, 1180816), (248, 1033214), (364, 703948), (392, 653666), (403, 635824), (434, 590408), (496, 516607), (637, 402256), (728, 351974), (784, 326833), (806, 317912), (811, 315952), (868, 295204), (1274, 201128), (1456, 175987), (1519, 168688), (1612, 158956), (1622, 157976), (1736, 147602), (2548, 100564), (2821, 90832), (3038, 84344), (3224, 79478), (3244, 78988), (3472, 73801), (5096, 50282), (5642, 45416), (5677, 45136), (6076, 42172), (6448, 39739), (6488, 39494), (10192, 25141), (10543, 24304), (11284, 22708), (11354, 22568), (12152, 21086), (12976, 19747)]