81815820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43987}}^1$

素因数の和:44030

約数の個数: 48

約数和(自身を含む): 236479488

約数和(自身を除く): 154663668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 43987, 87974, 131961, 175948, 219935, 263922, 439870, 527844, 659805, 879740, 1319610, 1363597, 2639220, 2727194, 4090791, 5454388, 6817985, 8181582, 13635970, 16363164, 20453955, 27271940, 40907910, 81815820]

約数ペア:

[(1, 81815820), (2, 40907910), (3, 27271940), (4, 20453955), (5, 16363164), (6, 13635970), (10, 8181582), (12, 6817985), (15, 5454388), (20, 4090791), (30, 2727194), (31, 2639220), (60, 1363597), (62, 1319610), (93, 879740), (124, 659805), (155, 527844), (186, 439870), (310, 263922), (372, 219935), (465, 175948), (620, 131961), (930, 87974), (1860, 43987)]