28283920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2971}}^1$

素因数の和:3008

約数の個数: 80

約数和(自身を含む): 79602048

約数和(自身を除く): 51318128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2380, 2971, 4760, 5942, 9520, 11884, 14855, 20797, 23768, 29710, 41594, 47536, 50507, 59420, 83188, 101014, 103985, 118840, 166376, 202028, 207970, 237680, 252535, 332752, 353549, 404056, 415940, 505070, 707098, 808112, 831880, 1010140, 1414196, 1663760, 1767745, 2020280, 2828392, 3535490, 4040560, 5656784, 7070980, 14141960, 28283920]

約数ペア:

[(1, 28283920), (2, 14141960), (4, 7070980), (5, 5656784), (7, 4040560), (8, 3535490), (10, 2828392), (14, 2020280), (16, 1767745), (17, 1663760), (20, 1414196), (28, 1010140), (34, 831880), (35, 808112), (40, 707098), (56, 505070), (68, 415940), (70, 404056), (80, 353549), (85, 332752), (112, 252535), (119, 237680), (136, 207970), (140, 202028), (170, 166376), (238, 118840), (272, 103985), (280, 101014), (340, 83188), (476, 59420), (560, 50507), (595, 47536), (680, 41594), (952, 29710), (1190, 23768), (1360, 20797), (1904, 14855), (2380, 11884), (2971, 9520), (4760, 5942)]