402556140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{319489}}^1$

素因数の和:319511

約数の個数: 72

約数和(自身を含む): 1395532320

約数和(自身を除く): 992976180

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, 319489, 638978, 958467, 1277956, 1597445, 1916934, 2236423, 2875401, 3194890, 3833868, 4472846, 4792335, 5750802, 6389780, 6709269, 8945692, 9584670, 11182115, 11501604, 13418538, 14377005, 19169340, 20127807, 22364230, 26837076, 28754010, 33546345, 40255614, 44728460, 57508020, 67092690, 80511228, 100639035, 134185380, 201278070, 402556140]

約数ペア:

[(1, 402556140), (2, 201278070), (3, 134185380), (4, 100639035), (5, 80511228), (6, 67092690), (7, 57508020), (9, 44728460), (10, 40255614), (12, 33546345), (14, 28754010), (15, 26837076), (18, 22364230), (20, 20127807), (21, 19169340), (28, 14377005), (30, 13418538), (35, 11501604), (36, 11182115), (42, 9584670), (45, 8945692), (60, 6709269), (63, 6389780), (70, 5750802), (84, 4792335), (90, 4472846), (105, 3833868), (126, 3194890), (140, 2875401), (180, 2236423), (210, 1916934), (252, 1597445), (315, 1277956), (420, 958467), (630, 638978), (1260, 319489)]