208985220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{2281}}^1$

素因数の和:2805

約数の個数: 72

約数和(自身を含む): 635445720

約数和(自身を除く): 426460500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 509, 1018, 1527, 2036, 2281, 2545, 3054, 4562, 4581, 5090, 6108, 6843, 7635, 9124, 9162, 10180, 11405, 13686, 15270, 18324, 20529, 22810, 22905, 27372, 30540, 34215, 41058, 45620, 45810, 68430, 82116, 91620, 102645, 136860, 205290, 410580, 1161029, 2322058, 3483087, 4644116, 5805145, 6966174, 10449261, 11610290, 13932348, 17415435, 20898522, 23220580, 34830870, 41797044, 52246305, 69661740, 104492610, 208985220]

約数ペア:

[(1, 208985220), (2, 104492610), (3, 69661740), (4, 52246305), (5, 41797044), (6, 34830870), (9, 23220580), (10, 20898522), (12, 17415435), (15, 13932348), (18, 11610290), (20, 10449261), (30, 6966174), (36, 5805145), (45, 4644116), (60, 3483087), (90, 2322058), (180, 1161029), (509, 410580), (1018, 205290), (1527, 136860), (2036, 102645), (2281, 91620), (2545, 82116), (3054, 68430), (4562, 45810), (4581, 45620), (5090, 41058), (6108, 34215), (6843, 30540), (7635, 27372), (9124, 22905), (9162, 22810), (10180, 20529), (11405, 18324), (13686, 15270)]