19810481520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1\times {\mathrm{4159}}^1$

素因数の和:4487

約数の個数: 160

約数和(自身を含む): 62396006400

約数和(自身を除く): 42585524880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 223, 240, 267, 356, 445, 446, 534, 669, 712, 890, 892, 1068, 1115, 1335, 1338, 1424, 1780, 1784, 2136, 2230, 2670, 2676, 3345, 3560, 3568, 4159, 4272, 4460, 5340, 5352, 6690, 7120, 8318, 8920, 10680, 10704, 12477, 13380, 16636, 17840, 19847, 20795, 21360, 24954, 26760, 33272, 39694, 41590, 49908, 53520, 59541, 62385, 66544, 79388, 83180, 99235, 99816, 119082, 124770, 158776, 166360, 198470, 199632, 238164, 249540, 297705, 317552, 332720, 370151, 396940, 476328, 499080, 595410, 740302, 793880, 927457, 952656, 998160, 1110453, 1190820, 1480604, 1587760, 1850755, 1854914, 2220906, 2381640, 2782371, 2961208, 3701510, 3709828, 4441812, 4637285, 4763280, 5552265, 5564742, 5922416, 7403020, 7419656, 8883624, 9274570, 11104530, 11129484, 13911855, 14806040, 14839312, 17767248, 18549140, 22209060, 22258968, 27823710, 29612080, 37098280, 44418120, 44517936, 55647420, 74196560, 82543673, 88836240, 111294840, 165087346, 222589680, 247631019, 330174692, 412718365, 495262038, 660349384, 825436730, 990524076, 1238155095, 1320698768, 1650873460, 1981048152, 2476310190, 3301746920, 3962096304, 4952620380, 6603493840, 9905240760, 19810481520]

約数ペア:

[(1, 19810481520), (2, 9905240760), (3, 6603493840), (4, 4952620380), (5, 3962096304), (6, 3301746920), (8, 2476310190), (10, 1981048152), (12, 1650873460), (15, 1320698768), (16, 1238155095), (20, 990524076), (24, 825436730), (30, 660349384), (40, 495262038), (48, 412718365), (60, 330174692), (80, 247631019), (89, 222589680), (120, 165087346), (178, 111294840), (223, 88836240), (240, 82543673), (267, 74196560), (356, 55647420), (445, 44517936), (446, 44418120), (534, 37098280), (669, 29612080), (712, 27823710), (890, 22258968), (892, 22209060), (1068, 18549140), (1115, 17767248), (1335, 14839312), (1338, 14806040), (1424, 13911855), (1780, 11129484), (1784, 11104530), (2136, 9274570), (2230, 8883624), (2670, 7419656), (2676, 7403020), (3345, 5922416), (3560, 5564742), (3568, 5552265), (4159, 4763280), (4272, 4637285), (4460, 4441812), (5340, 3709828), (5352, 3701510), (6690, 2961208), (7120, 2782371), (8318, 2381640), (8920, 2220906), (10680, 1854914), (10704, 1850755), (12477, 1587760), (13380, 1480604), (16636, 1190820), (17840, 1110453), (19847, 998160), (20795, 952656), (21360, 927457), (24954, 793880), (26760, 740302), (33272, 595410), (39694, 499080), (41590, 476328), (49908, 396940), (53520, 370151), (59541, 332720), (62385, 317552), (66544, 297705), (79388, 249540), (83180, 238164), (99235, 199632), (99816, 198470), (119082, 166360), (124770, 158776)]