131143280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{163}}^1$

素因数の和:378

約数の個数: 80

約数和(自身を含む): 312971040

約数和(自身を除く): 181827760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 113, 163, 178, 226, 326, 356, 445, 452, 565, 652, 712, 815, 890, 904, 1130, 1304, 1424, 1630, 1780, 1808, 2260, 2608, 3260, 3560, 4520, 6520, 7120, 9040, 10057, 13040, 14507, 18419, 20114, 29014, 36838, 40228, 50285, 58028, 72535, 73676, 80456, 92095, 100570, 116056, 145070, 147352, 160912, 184190, 201140, 232112, 290140, 294704, 368380, 402280, 580280, 736760, 804560, 1160560, 1473520, 1639291, 3278582, 6557164, 8196455, 13114328, 16392910, 26228656, 32785820, 65571640, 131143280]

約数ペア:

[(1, 131143280), (2, 65571640), (4, 32785820), (5, 26228656), (8, 16392910), (10, 13114328), (16, 8196455), (20, 6557164), (40, 3278582), (80, 1639291), (89, 1473520), (113, 1160560), (163, 804560), (178, 736760), (226, 580280), (326, 402280), (356, 368380), (445, 294704), (452, 290140), (565, 232112), (652, 201140), (712, 184190), (815, 160912), (890, 147352), (904, 145070), (1130, 116056), (1304, 100570), (1424, 92095), (1630, 80456), (1780, 73676), (1808, 72535), (2260, 58028), (2608, 50285), (3260, 40228), (3560, 36838), (4520, 29014), (6520, 20114), (7120, 18419), (9040, 14507), (10057, 13040)]