78678880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{70249}}^1$

素因数の和:70271

約数の個数: 48

約数和(自身を含む): 212436000

約数和(自身を除く): 133757120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 70249, 140498, 280996, 351245, 491743, 561992, 702490, 983486, 1123984, 1404980, 1966972, 2247968, 2458715, 2809960, 3933944, 4917430, 5619920, 7867888, 9834860, 11239840, 15735776, 19669720, 39339440, 78678880]

約数ペア:

[(1, 78678880), (2, 39339440), (4, 19669720), (5, 15735776), (7, 11239840), (8, 9834860), (10, 7867888), (14, 5619920), (16, 4917430), (20, 3933944), (28, 2809960), (32, 2458715), (35, 2247968), (40, 1966972), (56, 1404980), (70, 1123984), (80, 983486), (112, 702490), (140, 561992), (160, 491743), (224, 351245), (280, 280996), (560, 140498), (1120, 70249)]