131211100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{977}}^1$

素因数の和:1087

約数の個数: 72

約数和(自身を含む): 305605440

約数和(自身を除く): 174394340

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 79, 85, 100, 158, 170, 316, 340, 395, 425, 790, 850, 977, 1343, 1580, 1700, 1954, 1975, 2686, 3908, 3950, 4885, 5372, 6715, 7900, 9770, 13430, 16609, 19540, 24425, 26860, 33218, 33575, 48850, 66436, 67150, 77183, 83045, 97700, 134300, 154366, 166090, 308732, 332180, 385915, 415225, 771830, 830450, 1312111, 1543660, 1660900, 1929575, 2624222, 3859150, 5248444, 6560555, 7718300, 13121110, 26242220, 32802775, 65605550, 131211100]

約数ペア:

[(1, 131211100), (2, 65605550), (4, 32802775), (5, 26242220), (10, 13121110), (17, 7718300), (20, 6560555), (25, 5248444), (34, 3859150), (50, 2624222), (68, 1929575), (79, 1660900), (85, 1543660), (100, 1312111), (158, 830450), (170, 771830), (316, 415225), (340, 385915), (395, 332180), (425, 308732), (790, 166090), (850, 154366), (977, 134300), (1343, 97700), (1580, 83045), (1700, 77183), (1954, 67150), (1975, 66436), (2686, 48850), (3908, 33575), (3950, 33218), (4885, 26860), (5372, 24425), (6715, 19540), (7900, 16609), (9770, 13430)]