20369440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1399}}^1$

素因数の和:1434

約数の個数: 96

約数和(自身を含む): 59270400

約数和(自身を除く): 38900960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1399, 1456, 1820, 2080, 2798, 2912, 3640, 5596, 6995, 7280, 9793, 11192, 13990, 14560, 18187, 19586, 22384, 27980, 36374, 39172, 44768, 48965, 55960, 72748, 78344, 90935, 97930, 111920, 127309, 145496, 156688, 181870, 195860, 223840, 254618, 290992, 313376, 363740, 391720, 509236, 581984, 636545, 727480, 783440, 1018472, 1273090, 1454960, 1566880, 2036944, 2546180, 2909920, 4073888, 5092360, 10184720, 20369440]

約数ペア:

[(1, 20369440), (2, 10184720), (4, 5092360), (5, 4073888), (7, 2909920), (8, 2546180), (10, 2036944), (13, 1566880), (14, 1454960), (16, 1273090), (20, 1018472), (26, 783440), (28, 727480), (32, 636545), (35, 581984), (40, 509236), (52, 391720), (56, 363740), (65, 313376), (70, 290992), (80, 254618), (91, 223840), (104, 195860), (112, 181870), (130, 156688), (140, 145496), (160, 127309), (182, 111920), (208, 97930), (224, 90935), (260, 78344), (280, 72748), (364, 55960), (416, 48965), (455, 44768), (520, 39172), (560, 36374), (728, 27980), (910, 22384), (1040, 19586), (1120, 18187), (1399, 14560), (1456, 13990), (1820, 11192), (2080, 9793), (2798, 7280), (2912, 6995), (3640, 5596)]