18729952

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 38707200

約数和(自身を除く): 19977248

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 79, 124, 158, 239, 248, 316, 478, 496, 632, 956, 992, 1264, 1912, 2449, 2528, 3824, 4898, 7409, 7648, 9796, 14818, 18881, 19592, 29636, 37762, 39184, 59272, 75524, 78368, 118544, 151048, 237088, 302096, 585311, 604192, 1170622, 2341244, 4682488, 9364976, 18729952]

約数ペア:

[(1, 18729952), (2, 9364976), (4, 4682488), (8, 2341244), (16, 1170622), (31, 604192), (32, 585311), (62, 302096), (79, 237088), (124, 151048), (158, 118544), (239, 78368), (248, 75524), (316, 59272), (478, 39184), (496, 37762), (632, 29636), (956, 19592), (992, 18881), (1264, 14818), (1912, 9796), (2449, 7648), (2528, 7409), (3824, 4898)]