19991880

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:300

約数の個数: 128

約数和(自身を含む): 67651200

約数和(自身を除く): 47659320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 107, 108, 120, 135, 173, 180, 214, 216, 270, 321, 346, 360, 428, 519, 535, 540, 642, 692, 856, 865, 963, 1038, 1070, 1080, 1284, 1384, 1557, 1605, 1730, 1926, 2076, 2140, 2568, 2595, 2889, 3114, 3210, 3460, 3852, 4152, 4280, 4671, 4815, 5190, 5778, 6228, 6420, 6920, 7704, 7785, 9342, 9630, 10380, 11556, 12456, 12840, 14445, 15570, 18511, 18684, 19260, 20760, 23112, 23355, 28890, 31140, 37022, 37368, 38520, 46710, 55533, 57780, 62280, 74044, 92555, 93420, 111066, 115560, 148088, 166599, 185110, 186840, 222132, 277665, 333198, 370220, 444264, 499797, 555330, 666396, 740440, 832995, 999594, 1110660, 1332792, 1665990, 1999188, 2221320, 2498985, 3331980, 3998376, 4997970, 6663960, 9995940, 19991880]

約数ペア:

[(1, 19991880), (2, 9995940), (3, 6663960), (4, 4997970), (5, 3998376), (6, 3331980), (8, 2498985), (9, 2221320), (10, 1999188), (12, 1665990), (15, 1332792), (18, 1110660), (20, 999594), (24, 832995), (27, 740440), (30, 666396), (36, 555330), (40, 499797), (45, 444264), (54, 370220), (60, 333198), (72, 277665), (90, 222132), (107, 186840), (108, 185110), (120, 166599), (135, 148088), (173, 115560), (180, 111066), (214, 93420), (216, 92555), (270, 74044), (321, 62280), (346, 57780), (360, 55533), (428, 46710), (519, 38520), (535, 37368), (540, 37022), (642, 31140), (692, 28890), (856, 23355), (865, 23112), (963, 20760), (1038, 19260), (1070, 18684), (1080, 18511), (1284, 15570), (1384, 14445), (1557, 12840), (1605, 12456), (1730, 11556), (1926, 10380), (2076, 9630), (2140, 9342), (2568, 7785), (2595, 7704), (2889, 6920), (3114, 6420), (3210, 6228), (3460, 5778), (3852, 5190), (4152, 4815), (4280, 4671)]