80621636

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 153538560

約数和(自身を除く): 72916924

約数列:

[1, 2, 4, 19, 38, 67, 71, 76, 134, 142, 223, 268, 284, 446, 892, 1273, 1349, 2546, 2698, 4237, 4757, 5092, 5396, 8474, 9514, 14941, 15833, 16948, 19028, 29882, 31666, 59764, 63332, 90383, 180766, 283879, 300827, 361532, 567758, 601654, 1060811, 1135516, 1203308, 2121622, 4243244, 20155409, 40310818, 80621636]

約数ペア:

[(1, 80621636), (2, 40310818), (4, 20155409), (19, 4243244), (38, 2121622), (67, 1203308), (71, 1135516), (76, 1060811), (134, 601654), (142, 567758), (223, 361532), (268, 300827), (284, 283879), (446, 180766), (892, 90383), (1273, 63332), (1349, 59764), (2546, 31666), (2698, 29882), (4237, 19028), (4757, 16948), (5092, 15833), (5396, 14941), (8474, 9514)]