21657510

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{1637}}^1$

素因数の和:1667

約数の個数: 96

約数和(自身を含む): 67223520

約数和(自身を除く): 45566010

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 90, 98, 105, 126, 135, 147, 189, 210, 245, 270, 294, 315, 378, 441, 490, 630, 735, 882, 945, 1323, 1470, 1637, 1890, 2205, 2646, 3274, 4410, 4911, 6615, 8185, 9822, 11459, 13230, 14733, 16370, 22918, 24555, 29466, 34377, 44199, 49110, 57295, 68754, 73665, 80213, 88398, 103131, 114590, 147330, 160426, 171885, 206262, 220995, 240639, 309393, 343770, 401065, 441990, 481278, 515655, 618786, 721917, 802130, 1031310, 1203195, 1443834, 1546965, 2165751, 2406390, 3093930, 3609585, 4331502, 7219170, 10828755, 21657510]

約数ペア:

[(1, 21657510), (2, 10828755), (3, 7219170), (5, 4331502), (6, 3609585), (7, 3093930), (9, 2406390), (10, 2165751), (14, 1546965), (15, 1443834), (18, 1203195), (21, 1031310), (27, 802130), (30, 721917), (35, 618786), (42, 515655), (45, 481278), (49, 441990), (54, 401065), (63, 343770), (70, 309393), (90, 240639), (98, 220995), (105, 206262), (126, 171885), (135, 160426), (147, 147330), (189, 114590), (210, 103131), (245, 88398), (270, 80213), (294, 73665), (315, 68754), (378, 57295), (441, 49110), (490, 44199), (630, 34377), (735, 29466), (882, 24555), (945, 22918), (1323, 16370), (1470, 14733), (1637, 13230), (1890, 11459), (2205, 9822), (2646, 8185), (3274, 6615), (4410, 4911)]