21918356

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 42287616

約数和(自身を除く): 20369260

約数列:

[1, 2, 4, 23, 37, 46, 47, 74, 92, 94, 137, 148, 188, 274, 548, 851, 1081, 1702, 1739, 2162, 3151, 3404, 3478, 4324, 5069, 6302, 6439, 6956, 10138, 12604, 12878, 20276, 25756, 39997, 79994, 116587, 148097, 159988, 233174, 238243, 296194, 466348, 476486, 592388, 952972, 5479589, 10959178, 21918356]

約数ペア:

[(1, 21918356), (2, 10959178), (4, 5479589), (23, 952972), (37, 592388), (46, 476486), (47, 466348), (74, 296194), (92, 238243), (94, 233174), (137, 159988), (148, 148097), (188, 116587), (274, 79994), (548, 39997), (851, 25756), (1081, 20276), (1702, 12878), (1739, 12604), (2162, 10138), (3151, 6956), (3404, 6439), (3478, 6302), (4324, 5069)]