278825720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{1531}}^1$

素因数の和:1728

約数の個数: 64

約数和(自身を含む): 653551200

約数和(自身を除く): 374725480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 157, 232, 290, 314, 580, 628, 785, 1160, 1256, 1531, 1570, 3062, 3140, 4553, 6124, 6280, 7655, 9106, 12248, 15310, 18212, 22765, 30620, 36424, 44399, 45530, 61240, 88798, 91060, 177596, 182120, 221995, 240367, 355192, 443990, 480734, 887980, 961468, 1201835, 1775960, 1922936, 2403670, 4807340, 6970643, 9614680, 13941286, 27882572, 34853215, 55765144, 69706430, 139412860, 278825720]

約数ペア:

[(1, 278825720), (2, 139412860), (4, 69706430), (5, 55765144), (8, 34853215), (10, 27882572), (20, 13941286), (29, 9614680), (40, 6970643), (58, 4807340), (116, 2403670), (145, 1922936), (157, 1775960), (232, 1201835), (290, 961468), (314, 887980), (580, 480734), (628, 443990), (785, 355192), (1160, 240367), (1256, 221995), (1531, 182120), (1570, 177596), (3062, 91060), (3140, 88798), (4553, 61240), (6124, 45530), (6280, 44399), (7655, 36424), (9106, 30620), (12248, 22765), (15310, 18212)]