28788560

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:252

約数の個数: 80

約数和(自身を含む): 70120512

約数和(自身を除く): 41331952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 67, 80, 82, 131, 134, 164, 205, 262, 268, 328, 335, 410, 524, 536, 655, 656, 670, 820, 1048, 1072, 1310, 1340, 1640, 2096, 2620, 2680, 2747, 3280, 5240, 5360, 5371, 5494, 8777, 10480, 10742, 10988, 13735, 17554, 21484, 21976, 26855, 27470, 35108, 42968, 43885, 43952, 53710, 54940, 70216, 85936, 87770, 107420, 109880, 140432, 175540, 214840, 219760, 351080, 359857, 429680, 702160, 719714, 1439428, 1799285, 2878856, 3598570, 5757712, 7197140, 14394280, 28788560]

約数ペア:

[(1, 28788560), (2, 14394280), (4, 7197140), (5, 5757712), (8, 3598570), (10, 2878856), (16, 1799285), (20, 1439428), (40, 719714), (41, 702160), (67, 429680), (80, 359857), (82, 351080), (131, 219760), (134, 214840), (164, 175540), (205, 140432), (262, 109880), (268, 107420), (328, 87770), (335, 85936), (410, 70216), (524, 54940), (536, 53710), (655, 43952), (656, 43885), (670, 42968), (820, 35108), (1048, 27470), (1072, 26855), (1310, 21976), (1340, 21484), (1640, 17554), (2096, 13735), (2620, 10988), (2680, 10742), (2747, 10480), (3280, 8777), (5240, 5494), (5360, 5371)]