489489620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{5651}}^1$

素因数の和:5792

約数の個数: 48

約数和(自身を含む): 1059682176

約数和(自身を除く): 570192556

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 1220, 1420, 4331, 5651, 8662, 11302, 17324, 21655, 22604, 28255, 43310, 56510, 86620, 113020, 344711, 401221, 689422, 802442, 1378844, 1604884, 1723555, 2006105, 3447110, 4012210, 6894220, 8024420, 24474481, 48948962, 97897924, 122372405, 244744810, 489489620]

約数ペア:

[(1, 489489620), (2, 244744810), (4, 122372405), (5, 97897924), (10, 48948962), (20, 24474481), (61, 8024420), (71, 6894220), (122, 4012210), (142, 3447110), (244, 2006105), (284, 1723555), (305, 1604884), (355, 1378844), (610, 802442), (710, 689422), (1220, 401221), (1420, 344711), (4331, 113020), (5651, 86620), (8662, 56510), (11302, 43310), (17324, 28255), (21655, 22604)]