19940580

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{373}}^1$

素因数の和:408

約数の個数: 144

約数和(自身を含む): 68612544

約数和(自身を除く): 48671964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 243, 270, 297, 324, 330, 373, 396, 405, 486, 495, 540, 594, 660, 746, 810, 891, 972, 990, 1119, 1188, 1215, 1485, 1492, 1620, 1782, 1865, 1980, 2238, 2430, 2673, 2970, 3357, 3564, 3730, 4103, 4455, 4476, 4860, 5346, 5595, 5940, 6714, 7460, 8206, 8910, 10071, 10692, 11190, 12309, 13365, 13428, 16412, 16785, 17820, 20142, 20515, 22380, 24618, 26730, 30213, 33570, 36927, 40284, 41030, 49236, 50355, 53460, 60426, 61545, 67140, 73854, 82060, 90639, 100710, 110781, 120852, 123090, 147708, 151065, 181278, 184635, 201420, 221562, 246180, 302130, 332343, 362556, 369270, 443124, 453195, 553905, 604260, 664686, 738540, 906390, 997029, 1107810, 1329372, 1661715, 1812780, 1994058, 2215620, 3323430, 3988116, 4985145, 6646860, 9970290, 19940580]

約数ペア:

[(1, 19940580), (2, 9970290), (3, 6646860), (4, 4985145), (5, 3988116), (6, 3323430), (9, 2215620), (10, 1994058), (11, 1812780), (12, 1661715), (15, 1329372), (18, 1107810), (20, 997029), (22, 906390), (27, 738540), (30, 664686), (33, 604260), (36, 553905), (44, 453195), (45, 443124), (54, 369270), (55, 362556), (60, 332343), (66, 302130), (81, 246180), (90, 221562), (99, 201420), (108, 184635), (110, 181278), (132, 151065), (135, 147708), (162, 123090), (165, 120852), (180, 110781), (198, 100710), (220, 90639), (243, 82060), (270, 73854), (297, 67140), (324, 61545), (330, 60426), (373, 53460), (396, 50355), (405, 49236), (486, 41030), (495, 40284), (540, 36927), (594, 33570), (660, 30213), (746, 26730), (810, 24618), (891, 22380), (972, 20515), (990, 20142), (1119, 17820), (1188, 16785), (1215, 16412), (1485, 13428), (1492, 13365), (1620, 12309), (1782, 11190), (1865, 10692), (1980, 10071), (2238, 8910), (2430, 8206), (2673, 7460), (2970, 6714), (3357, 5940), (3564, 5595), (3730, 5346), (4103, 4860), (4455, 4476)]