21697980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3511}}^1$

素因数の和:3626

約数の個数: 48

約数和(自身を含む): 61361664

約数和(自身を除く): 39663684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 103, 206, 309, 412, 515, 618, 1030, 1236, 1545, 2060, 3090, 3511, 6180, 7022, 10533, 14044, 17555, 21066, 35110, 42132, 52665, 70220, 105330, 210660, 361633, 723266, 1084899, 1446532, 1808165, 2169798, 3616330, 4339596, 5424495, 7232660, 10848990, 21697980]

約数ペア:

[(1, 21697980), (2, 10848990), (3, 7232660), (4, 5424495), (5, 4339596), (6, 3616330), (10, 2169798), (12, 1808165), (15, 1446532), (20, 1084899), (30, 723266), (60, 361633), (103, 210660), (206, 105330), (309, 70220), (412, 52665), (515, 42132), (618, 35110), (1030, 21066), (1236, 17555), (1545, 14044), (2060, 10533), (3090, 7022), (3511, 6180)]