21988680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{26177}}^1$

素因数の和:26198

約数の個数: 64

約数和(自身を含む): 75392640

約数和(自身を除く): 53403960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 26177, 52354, 78531, 104708, 130885, 157062, 183239, 209416, 261770, 314124, 366478, 392655, 523540, 549717, 628248, 732956, 785310, 916195, 1047080, 1099434, 1465912, 1570620, 1832390, 2198868, 2748585, 3141240, 3664780, 4397736, 5497170, 7329560, 10994340, 21988680]

約数ペア:

[(1, 21988680), (2, 10994340), (3, 7329560), (4, 5497170), (5, 4397736), (6, 3664780), (7, 3141240), (8, 2748585), (10, 2198868), (12, 1832390), (14, 1570620), (15, 1465912), (20, 1099434), (21, 1047080), (24, 916195), (28, 785310), (30, 732956), (35, 628248), (40, 549717), (42, 523540), (56, 392655), (60, 366478), (70, 314124), (84, 261770), (105, 209416), (120, 183239), (140, 157062), (168, 130885), (210, 104708), (280, 78531), (420, 52354), (840, 26177)]