209219890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^4\times {\mathrm{1429}}^1$

素因数の和:1480

約数の個数: 40

約数和(自身を含む): 414542700

約数和(自身を除く): 205322810

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 1331, 1429, 2662, 2858, 6655, 7145, 13310, 14290, 14641, 15719, 29282, 31438, 73205, 78595, 146410, 157190, 172909, 345818, 864545, 1729090, 1901999, 3803998, 9509995, 19019990, 20921989, 41843978, 104609945, 209219890]

約数ペア:

[(1, 209219890), (2, 104609945), (5, 41843978), (10, 20921989), (11, 19019990), (22, 9509995), (55, 3803998), (110, 1901999), (121, 1729090), (242, 864545), (605, 345818), (1210, 172909), (1331, 157190), (1429, 146410), (2662, 78595), (2858, 73205), (6655, 31438), (7145, 29282), (13310, 15719), (14290, 14641)]