21574980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17123}}^1$

素因数の和:17145

約数の個数: 72

約数和(自身を含む): 74797632

約数和(自身を除く): 53222652

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, 17123, 34246, 51369, 68492, 85615, 102738, 119861, 154107, 171230, 205476, 239722, 256845, 308214, 342460, 359583, 479444, 513690, 599305, 616428, 719166, 770535, 1027380, 1078749, 1198610, 1438332, 1541070, 1797915, 2157498, 2397220, 3082140, 3595830, 4314996, 5393745, 7191660, 10787490, 21574980]

約数ペア:

[(1, 21574980), (2, 10787490), (3, 7191660), (4, 5393745), (5, 4314996), (6, 3595830), (7, 3082140), (9, 2397220), (10, 2157498), (12, 1797915), (14, 1541070), (15, 1438332), (18, 1198610), (20, 1078749), (21, 1027380), (28, 770535), (30, 719166), (35, 616428), (36, 599305), (42, 513690), (45, 479444), (60, 359583), (63, 342460), (70, 308214), (84, 256845), (90, 239722), (105, 205476), (126, 171230), (140, 154107), (180, 119861), (210, 102738), (252, 85615), (315, 68492), (420, 51369), (630, 34246), (1260, 17123)]