1801940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 4416384

約数和(自身を除く): 2614444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 211, 244, 305, 422, 427, 610, 844, 854, 1055, 1220, 1477, 1708, 2110, 2135, 2954, 4220, 4270, 5908, 7385, 8540, 12871, 14770, 25742, 29540, 51484, 64355, 90097, 128710, 180194, 257420, 360388, 450485, 900970, 1801940]

約数ペア:

[(1, 1801940), (2, 900970), (4, 450485), (5, 360388), (7, 257420), (10, 180194), (14, 128710), (20, 90097), (28, 64355), (35, 51484), (61, 29540), (70, 25742), (122, 14770), (140, 12871), (211, 8540), (244, 7385), (305, 5908), (422, 4270), (427, 4220), (610, 2954), (844, 2135), (854, 2110), (1055, 1708), (1220, 1477)]