19846960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 55215216

約数和(自身を除く): 35368256

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 61, 70, 80, 83, 98, 112, 122, 140, 166, 196, 244, 245, 280, 305, 332, 392, 415, 427, 488, 490, 560, 581, 610, 664, 784, 830, 854, 976, 980, 1162, 1220, 1328, 1660, 1708, 1960, 2135, 2324, 2440, 2905, 2989, 3320, 3416, 3920, 4067, 4270, 4648, 4880, 5063, 5810, 5978, 6640, 6832, 8134, 8540, 9296, 10126, 11620, 11956, 14945, 16268, 17080, 20252, 20335, 23240, 23912, 25315, 29890, 32536, 34160, 35441, 40504, 40670, 46480, 47824, 50630, 59780, 65072, 70882, 81008, 81340, 101260, 119560, 141764, 162680, 177205, 202520, 239120, 248087, 283528, 325360, 354410, 405040, 496174, 567056, 708820, 992348, 1240435, 1417640, 1984696, 2480870, 2835280, 3969392, 4961740, 9923480, 19846960]

約数ペア:

[(1, 19846960), (2, 9923480), (4, 4961740), (5, 3969392), (7, 2835280), (8, 2480870), (10, 1984696), (14, 1417640), (16, 1240435), (20, 992348), (28, 708820), (35, 567056), (40, 496174), (49, 405040), (56, 354410), (61, 325360), (70, 283528), (80, 248087), (83, 239120), (98, 202520), (112, 177205), (122, 162680), (140, 141764), (166, 119560), (196, 101260), (244, 81340), (245, 81008), (280, 70882), (305, 65072), (332, 59780), (392, 50630), (415, 47824), (427, 46480), (488, 40670), (490, 40504), (560, 35441), (581, 34160), (610, 32536), (664, 29890), (784, 25315), (830, 23912), (854, 23240), (976, 20335), (980, 20252), (1162, 17080), (1220, 16268), (1328, 14945), (1660, 11956), (1708, 11620), (1960, 10126), (2135, 9296), (2324, 8540), (2440, 8134), (2905, 6832), (2989, 6640), (3320, 5978), (3416, 5810), (3920, 5063), (4067, 4880), (4270, 4648)]