256561992

素因数分解:

$2^3\times 3^4\times {\mathrm{281}}^1\times {\mathrm{1409}}^1$

素因数の和:1708

約数の個数: 80

約数和(自身を含む): 721680300

約数和(自身を除く): 465118308

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 281, 324, 562, 648, 843, 1124, 1409, 1686, 2248, 2529, 2818, 3372, 4227, 5058, 5636, 6744, 7587, 8454, 10116, 11272, 12681, 15174, 16908, 20232, 22761, 25362, 30348, 33816, 38043, 45522, 50724, 60696, 76086, 91044, 101448, 114129, 152172, 182088, 228258, 304344, 395929, 456516, 791858, 913032, 1187787, 1583716, 2375574, 3167432, 3563361, 4751148, 7126722, 9502296, 10690083, 14253444, 21380166, 28506888, 32070249, 42760332, 64140498, 85520664, 128280996, 256561992]

約数ペア:

[(1, 256561992), (2, 128280996), (3, 85520664), (4, 64140498), (6, 42760332), (8, 32070249), (9, 28506888), (12, 21380166), (18, 14253444), (24, 10690083), (27, 9502296), (36, 7126722), (54, 4751148), (72, 3563361), (81, 3167432), (108, 2375574), (162, 1583716), (216, 1187787), (281, 913032), (324, 791858), (562, 456516), (648, 395929), (843, 304344), (1124, 228258), (1409, 182088), (1686, 152172), (2248, 114129), (2529, 101448), (2818, 91044), (3372, 76086), (4227, 60696), (5058, 50724), (5636, 45522), (6744, 38043), (7587, 33816), (8454, 30348), (10116, 25362), (11272, 22761), (12681, 20232), (15174, 16908)]