168521780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{359}}^1\times {\mathrm{479}}^1$

素因数の和:861

約数の個数: 72

約数和(自身を含む): 413683200

約数和(自身を除く): 245161420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 359, 479, 490, 718, 958, 980, 1436, 1795, 1916, 2395, 2513, 3353, 3590, 4790, 5026, 6706, 7180, 9580, 10052, 12565, 13412, 16765, 17591, 23471, 25130, 33530, 35182, 46942, 50260, 67060, 70364, 87955, 93884, 117355, 171961, 175910, 234710, 343922, 351820, 469420, 687844, 859805, 1203727, 1719610, 2407454, 3439220, 4814908, 6018635, 8426089, 12037270, 16852178, 24074540, 33704356, 42130445, 84260890, 168521780]

約数ペア:

[(1, 168521780), (2, 84260890), (4, 42130445), (5, 33704356), (7, 24074540), (10, 16852178), (14, 12037270), (20, 8426089), (28, 6018635), (35, 4814908), (49, 3439220), (70, 2407454), (98, 1719610), (140, 1203727), (196, 859805), (245, 687844), (359, 469420), (479, 351820), (490, 343922), (718, 234710), (958, 175910), (980, 171961), (1436, 117355), (1795, 93884), (1916, 87955), (2395, 70364), (2513, 67060), (3353, 50260), (3590, 46942), (4790, 35182), (5026, 33530), (6706, 25130), (7180, 23471), (9580, 17591), (10052, 16765), (12565, 13412)]