21213540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1759}}^1$

素因数の和:1841

約数の個数: 72

約数和(自身を含む): 65345280

約数和(自身を除く): 44131740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 67, 90, 134, 180, 201, 268, 335, 402, 603, 670, 804, 1005, 1206, 1340, 1759, 2010, 2412, 3015, 3518, 4020, 5277, 6030, 7036, 8795, 10554, 12060, 15831, 17590, 21108, 26385, 31662, 35180, 52770, 63324, 79155, 105540, 117853, 158310, 235706, 316620, 353559, 471412, 589265, 707118, 1060677, 1178530, 1414236, 1767795, 2121354, 2357060, 3535590, 4242708, 5303385, 7071180, 10606770, 21213540]

約数ペア:

[(1, 21213540), (2, 10606770), (3, 7071180), (4, 5303385), (5, 4242708), (6, 3535590), (9, 2357060), (10, 2121354), (12, 1767795), (15, 1414236), (18, 1178530), (20, 1060677), (30, 707118), (36, 589265), (45, 471412), (60, 353559), (67, 316620), (90, 235706), (134, 158310), (180, 117853), (201, 105540), (268, 79155), (335, 63324), (402, 52770), (603, 35180), (670, 31662), (804, 26385), (1005, 21108), (1206, 17590), (1340, 15831), (1759, 12060), (2010, 10554), (2412, 8795), (3015, 7036), (3518, 6030), (4020, 5277)]