861490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 1833984

約数和(自身を除く): 972494

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 397, 434, 794, 1085, 1985, 2170, 2779, 3970, 5558, 12307, 13895, 24614, 27790, 61535, 86149, 123070, 172298, 430745, 861490]

約数ペア:

[(1, 861490), (2, 430745), (5, 172298), (7, 123070), (10, 86149), (14, 61535), (31, 27790), (35, 24614), (62, 13895), (70, 12307), (155, 5558), (217, 3970), (310, 2779), (397, 2170), (434, 1985), (794, 1085)]