20742240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:644

約数の個数: 96

約数和(自身を含む): 66286080

約数和(自身を除く): 45543840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 79, 80, 96, 120, 158, 160, 237, 240, 316, 395, 474, 480, 547, 632, 790, 948, 1094, 1185, 1264, 1580, 1641, 1896, 2188, 2370, 2528, 2735, 3160, 3282, 3792, 4376, 4740, 5470, 6320, 6564, 7584, 8205, 8752, 9480, 10940, 12640, 13128, 16410, 17504, 18960, 21880, 26256, 32820, 37920, 43213, 43760, 52512, 65640, 86426, 87520, 129639, 131280, 172852, 216065, 259278, 262560, 345704, 432130, 518556, 648195, 691408, 864260, 1037112, 1296390, 1382816, 1728520, 2074224, 2592780, 3457040, 4148448, 5185560, 6914080, 10371120, 20742240]

約数ペア:

[(1, 20742240), (2, 10371120), (3, 6914080), (4, 5185560), (5, 4148448), (6, 3457040), (8, 2592780), (10, 2074224), (12, 1728520), (15, 1382816), (16, 1296390), (20, 1037112), (24, 864260), (30, 691408), (32, 648195), (40, 518556), (48, 432130), (60, 345704), (79, 262560), (80, 259278), (96, 216065), (120, 172852), (158, 131280), (160, 129639), (237, 87520), (240, 86426), (316, 65640), (395, 52512), (474, 43760), (480, 43213), (547, 37920), (632, 32820), (790, 26256), (948, 21880), (1094, 18960), (1185, 17504), (1264, 16410), (1580, 13128), (1641, 12640), (1896, 10940), (2188, 9480), (2370, 8752), (2528, 8205), (2735, 7584), (3160, 6564), (3282, 6320), (3792, 5470), (4376, 4740)]