19820980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{601}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 44600976

約数和(自身を除く): 24779996

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 97, 170, 194, 340, 388, 485, 601, 970, 1202, 1649, 1940, 2404, 3005, 3298, 6010, 6596, 8245, 10217, 12020, 16490, 20434, 32980, 40868, 51085, 58297, 102170, 116594, 204340, 233188, 291485, 582970, 991049, 1165940, 1982098, 3964196, 4955245, 9910490, 19820980]

約数ペア:

[(1, 19820980), (2, 9910490), (4, 4955245), (5, 3964196), (10, 1982098), (17, 1165940), (20, 991049), (34, 582970), (68, 291485), (85, 233188), (97, 204340), (170, 116594), (194, 102170), (340, 58297), (388, 51085), (485, 40868), (601, 32980), (970, 20434), (1202, 16490), (1649, 12020), (1940, 10217), (2404, 8245), (3005, 6596), (3298, 6010)]