20335980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6917}}^1$

素因数の和:6943

約数の個数: 72

約数和(自身を含む): 66246768

約数和(自身を除く): 45910788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6917, 13834, 20751, 27668, 34585, 41502, 48419, 69170, 83004, 96838, 103755, 138340, 145257, 193676, 207510, 242095, 290514, 338933, 415020, 484190, 581028, 677866, 726285, 968380, 1016799, 1355732, 1452570, 1694665, 2033598, 2905140, 3389330, 4067196, 5083995, 6778660, 10167990, 20335980]

約数ペア:

[(1, 20335980), (2, 10167990), (3, 6778660), (4, 5083995), (5, 4067196), (6, 3389330), (7, 2905140), (10, 2033598), (12, 1694665), (14, 1452570), (15, 1355732), (20, 1016799), (21, 968380), (28, 726285), (30, 677866), (35, 581028), (42, 484190), (49, 415020), (60, 338933), (70, 290514), (84, 242095), (98, 207510), (105, 193676), (140, 145257), (147, 138340), (196, 103755), (210, 96838), (245, 83004), (294, 69170), (420, 48419), (490, 41502), (588, 34585), (735, 27668), (980, 20751), (1470, 13834), (2940, 6917)]