39978540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31729}}^1$

素因数の和:31751

約数の個数: 72

約数和(自身を含む): 138596640

約数和(自身を除く): 98618100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 31729, 63458, 95187, 126916, 158645, 190374, 222103, 285561, 317290, 380748, 444206, 475935, 571122, 634580, 666309, 888412, 951870, 1110515, 1142244, 1332618, 1427805, 1903740, 1998927, 2221030, 2665236, 2855610, 3331545, 3997854, 4442060, 5711220, 6663090, 7995708, 9994635, 13326180, 19989270, 39978540]

約数ペア:

[(1, 39978540), (2, 19989270), (3, 13326180), (4, 9994635), (5, 7995708), (6, 6663090), (7, 5711220), (9, 4442060), (10, 3997854), (12, 3331545), (14, 2855610), (15, 2665236), (18, 2221030), (20, 1998927), (21, 1903740), (28, 1427805), (30, 1332618), (35, 1142244), (36, 1110515), (42, 951870), (45, 888412), (60, 666309), (63, 634580), (70, 571122), (84, 475935), (90, 444206), (105, 380748), (126, 317290), (140, 285561), (180, 222103), (210, 190374), (252, 158645), (315, 126916), (420, 95187), (630, 63458), (1260, 31729)]