261831456

素因数分解:

$2^5\times 3^2\times {\mathrm{31}}^1\times {\mathrm{29327}}^1$

素因数の和:29374

約数の個数: 72

約数和(自身を含む): 768628224

約数和(自身を除く): 506796768

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 72, 93, 96, 124, 144, 186, 248, 279, 288, 372, 496, 558, 744, 992, 1116, 1488, 2232, 2976, 4464, 8928, 29327, 58654, 87981, 117308, 175962, 234616, 263943, 351924, 469232, 527886, 703848, 909137, 938464, 1055772, 1407696, 1818274, 2111544, 2727411, 2815392, 3636548, 4223088, 5454822, 7273096, 8182233, 8446176, 10909644, 14546192, 16364466, 21819288, 29092384, 32728932, 43638576, 65457864, 87277152, 130915728, 261831456]

約数ペア:

[(1, 261831456), (2, 130915728), (3, 87277152), (4, 65457864), (6, 43638576), (8, 32728932), (9, 29092384), (12, 21819288), (16, 16364466), (18, 14546192), (24, 10909644), (31, 8446176), (32, 8182233), (36, 7273096), (48, 5454822), (62, 4223088), (72, 3636548), (93, 2815392), (96, 2727411), (124, 2111544), (144, 1818274), (186, 1407696), (248, 1055772), (279, 938464), (288, 909137), (372, 703848), (496, 527886), (558, 469232), (744, 351924), (992, 263943), (1116, 234616), (1488, 175962), (2232, 117308), (2976, 87981), (4464, 58654), (8928, 29327)]