256838160

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1619}}^1$

素因数の和:2296

約数の個数: 80

約数和(自身を含む): 797895360

約数和(自身を除く): 541057200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 661, 1322, 1619, 1983, 2644, 3238, 3305, 3966, 4857, 5288, 6476, 6610, 7932, 8095, 9714, 9915, 10576, 12952, 13220, 15864, 16190, 19428, 19830, 24285, 25904, 26440, 31728, 32380, 38856, 39660, 48570, 52880, 64760, 77712, 79320, 97140, 129520, 158640, 194280, 388560, 1070159, 2140318, 3210477, 4280636, 5350795, 6420954, 8561272, 10701590, 12841908, 16052385, 17122544, 21403180, 25683816, 32104770, 42806360, 51367632, 64209540, 85612720, 128419080, 256838160]

約数ペア:

[(1, 256838160), (2, 128419080), (3, 85612720), (4, 64209540), (5, 51367632), (6, 42806360), (8, 32104770), (10, 25683816), (12, 21403180), (15, 17122544), (16, 16052385), (20, 12841908), (24, 10701590), (30, 8561272), (40, 6420954), (48, 5350795), (60, 4280636), (80, 3210477), (120, 2140318), (240, 1070159), (661, 388560), (1322, 194280), (1619, 158640), (1983, 129520), (2644, 97140), (3238, 79320), (3305, 77712), (3966, 64760), (4857, 52880), (5288, 48570), (6476, 39660), (6610, 38856), (7932, 32380), (8095, 31728), (9714, 26440), (9915, 25904), (10576, 24285), (12952, 19830), (13220, 19428), (15864, 16190)]