19805776

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{547}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 40227584

約数和(自身を除く): 20421808

約数列:

[1, 2, 4, 8, 16, 31, 62, 73, 124, 146, 248, 292, 496, 547, 584, 1094, 1168, 2188, 2263, 4376, 4526, 8752, 9052, 16957, 18104, 33914, 36208, 39931, 67828, 79862, 135656, 159724, 271312, 319448, 638896, 1237861, 2475722, 4951444, 9902888, 19805776]

約数ペア:

[(1, 19805776), (2, 9902888), (4, 4951444), (8, 2475722), (16, 1237861), (31, 638896), (62, 319448), (73, 271312), (124, 159724), (146, 135656), (248, 79862), (292, 67828), (496, 39931), (547, 36208), (584, 33914), (1094, 18104), (1168, 16957), (2188, 9052), (2263, 8752), (4376, 4526)]