320401840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{541}}^1\times {\mathrm{673}}^1$

素因数の和:1238

約数の個数: 80

約数和(自身を含む): 815367456

約数和(自身を除く): 494965616

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 541, 673, 880, 1082, 1346, 2164, 2692, 2705, 3365, 4328, 5384, 5410, 5951, 6730, 7403, 8656, 10768, 10820, 11902, 13460, 14806, 21640, 23804, 26920, 29612, 29755, 37015, 43280, 47608, 53840, 59224, 59510, 74030, 95216, 118448, 119020, 148060, 238040, 296120, 364093, 476080, 592240, 728186, 1456372, 1820465, 2912744, 3640930, 4005023, 5825488, 7281860, 8010046, 14563720, 16020092, 20025115, 29127440, 32040184, 40050230, 64080368, 80100460, 160200920, 320401840]

約数ペア:

[(1, 320401840), (2, 160200920), (4, 80100460), (5, 64080368), (8, 40050230), (10, 32040184), (11, 29127440), (16, 20025115), (20, 16020092), (22, 14563720), (40, 8010046), (44, 7281860), (55, 5825488), (80, 4005023), (88, 3640930), (110, 2912744), (176, 1820465), (220, 1456372), (440, 728186), (541, 592240), (673, 476080), (880, 364093), (1082, 296120), (1346, 238040), (2164, 148060), (2692, 119020), (2705, 118448), (3365, 95216), (4328, 74030), (5384, 59510), (5410, 59224), (5951, 53840), (6730, 47608), (7403, 43280), (8656, 37015), (10768, 29755), (10820, 29612), (11902, 26920), (13460, 23804), (14806, 21640)]