19989720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:326

約数の個数: 128

約数和(自身を含む): 67737600

約数和(自身を除く): 47747880

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, 83, 90, 108, 120, 135, 166, 180, 216, 223, 249, 270, 332, 360, 415, 446, 498, 540, 664, 669, 747, 830, 892, 996, 1080, 1115, 1245, 1338, 1494, 1660, 1784, 1992, 2007, 2230, 2241, 2490, 2676, 2988, 3320, 3345, 3735, 4014, 4460, 4482, 4980, 5352, 5976, 6021, 6690, 7470, 8028, 8920, 8964, 9960, 10035, 11205, 12042, 13380, 14940, 16056, 17928, 18509, 20070, 22410, 24084, 26760, 29880, 30105, 37018, 40140, 44820, 48168, 55527, 60210, 74036, 80280, 89640, 92545, 111054, 120420, 148072, 166581, 185090, 222108, 240840, 277635, 333162, 370180, 444216, 499743, 555270, 666324, 740360, 832905, 999486, 1110540, 1332648, 1665810, 1998972, 2221080, 2498715, 3331620, 3997944, 4997430, 6663240, 9994860, 19989720]

約数ペア:

[(1, 19989720), (2, 9994860), (3, 6663240), (4, 4997430), (5, 3997944), (6, 3331620), (8, 2498715), (9, 2221080), (10, 1998972), (12, 1665810), (15, 1332648), (18, 1110540), (20, 999486), (24, 832905), (27, 740360), (30, 666324), (36, 555270), (40, 499743), (45, 444216), (54, 370180), (60, 333162), (72, 277635), (83, 240840), (90, 222108), (108, 185090), (120, 166581), (135, 148072), (166, 120420), (180, 111054), (216, 92545), (223, 89640), (249, 80280), (270, 74036), (332, 60210), (360, 55527), (415, 48168), (446, 44820), (498, 40140), (540, 37018), (664, 30105), (669, 29880), (747, 26760), (830, 24084), (892, 22410), (996, 20070), (1080, 18509), (1115, 17928), (1245, 16056), (1338, 14940), (1494, 13380), (1660, 12042), (1784, 11205), (1992, 10035), (2007, 9960), (2230, 8964), (2241, 8920), (2490, 8028), (2676, 7470), (2988, 6690), (3320, 6021), (3345, 5976), (3735, 5352), (4014, 4980), (4460, 4482)]