20392428

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:539

約数の個数: 72

約数和(自身を含む): 56179200

約数和(自身を除く): 35786772

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 79, 84, 98, 147, 158, 196, 237, 294, 316, 439, 474, 553, 588, 878, 948, 1106, 1317, 1659, 1756, 2212, 2634, 3073, 3318, 3871, 5268, 6146, 6636, 7742, 9219, 11613, 12292, 15484, 18438, 21511, 23226, 34681, 36876, 43022, 46452, 64533, 69362, 86044, 104043, 129066, 138724, 208086, 242767, 258132, 416172, 485534, 728301, 971068, 1456602, 1699369, 2913204, 3398738, 5098107, 6797476, 10196214, 20392428]

約数ペア:

[(1, 20392428), (2, 10196214), (3, 6797476), (4, 5098107), (6, 3398738), (7, 2913204), (12, 1699369), (14, 1456602), (21, 971068), (28, 728301), (42, 485534), (49, 416172), (79, 258132), (84, 242767), (98, 208086), (147, 138724), (158, 129066), (196, 104043), (237, 86044), (294, 69362), (316, 64533), (439, 46452), (474, 43022), (553, 36876), (588, 34681), (878, 23226), (948, 21511), (1106, 18438), (1317, 15484), (1659, 12292), (1756, 11613), (2212, 9219), (2634, 7742), (3073, 6636), (3318, 6146), (3871, 5268)]