20984132

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 42383040

約数和(自身を除く): 21398908

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 67, 76, 134, 247, 268, 317, 494, 634, 871, 988, 1268, 1273, 1742, 2546, 3484, 4121, 5092, 6023, 8242, 12046, 16484, 16549, 21239, 24092, 33098, 42478, 66196, 78299, 84956, 156598, 276107, 313196, 403541, 552214, 807082, 1104428, 1614164, 5246033, 10492066, 20984132]

約数ペア:

[(1, 20984132), (2, 10492066), (4, 5246033), (13, 1614164), (19, 1104428), (26, 807082), (38, 552214), (52, 403541), (67, 313196), (76, 276107), (134, 156598), (247, 84956), (268, 78299), (317, 66196), (494, 42478), (634, 33098), (871, 24092), (988, 21239), (1268, 16549), (1273, 16484), (1742, 12046), (2546, 8242), (3484, 6023), (4121, 5092)]