81122720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72431}}^1$

素因数の和:72453

約数の個数: 48

約数和(自身を含む): 219034368

約数和(自身を除く): 137911648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72431, 144862, 289724, 362155, 507017, 579448, 724310, 1014034, 1158896, 1448620, 2028068, 2317792, 2535085, 2897240, 4056136, 5070170, 5794480, 8112272, 10140340, 11588960, 16224544, 20280680, 40561360, 81122720]

約数ペア:

[(1, 81122720), (2, 40561360), (4, 20280680), (5, 16224544), (7, 11588960), (8, 10140340), (10, 8112272), (14, 5794480), (16, 5070170), (20, 4056136), (28, 2897240), (32, 2535085), (35, 2317792), (40, 2028068), (56, 1448620), (70, 1158896), (80, 1014034), (112, 724310), (140, 579448), (160, 507017), (224, 362155), (280, 289724), (560, 144862), (1120, 72431)]