77721340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1871}}^1$

素因数の和:1978

約数の個数: 48

約数和(自身を含む): 171085824

約数和(自身を除く): 93364484

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 268, 310, 335, 620, 670, 1340, 1871, 2077, 3742, 4154, 7484, 8308, 9355, 10385, 18710, 20770, 37420, 41540, 58001, 116002, 125357, 232004, 250714, 290005, 501428, 580010, 626785, 1160020, 1253570, 2507140, 3886067, 7772134, 15544268, 19430335, 38860670, 77721340]

約数ペア:

[(1, 77721340), (2, 38860670), (4, 19430335), (5, 15544268), (10, 7772134), (20, 3886067), (31, 2507140), (62, 1253570), (67, 1160020), (124, 626785), (134, 580010), (155, 501428), (268, 290005), (310, 250714), (335, 232004), (620, 125357), (670, 116002), (1340, 58001), (1871, 41540), (2077, 37420), (3742, 20770), (4154, 18710), (7484, 10385), (8308, 9355)]