280372580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 620430720

約数和(自身を除く): 340058140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 211, 290, 316, 395, 422, 580, 790, 841, 844, 1055, 1580, 1682, 2110, 2291, 3364, 4205, 4220, 4582, 6119, 8410, 9164, 11455, 12238, 16669, 16820, 22910, 24476, 30595, 33338, 45820, 61190, 66439, 66676, 83345, 122380, 132878, 166690, 177451, 265756, 332195, 333380, 354902, 483401, 664390, 709804, 887255, 966802, 1328780, 1774510, 1933604, 2417005, 3549020, 4834010, 9668020, 14018629, 28037258, 56074516, 70093145, 140186290, 280372580]

約数ペア:

[(1, 280372580), (2, 140186290), (4, 70093145), (5, 56074516), (10, 28037258), (20, 14018629), (29, 9668020), (58, 4834010), (79, 3549020), (116, 2417005), (145, 1933604), (158, 1774510), (211, 1328780), (290, 966802), (316, 887255), (395, 709804), (422, 664390), (580, 483401), (790, 354902), (841, 333380), (844, 332195), (1055, 265756), (1580, 177451), (1682, 166690), (2110, 132878), (2291, 122380), (3364, 83345), (4205, 66676), (4220, 66439), (4582, 61190), (6119, 45820), (8410, 33338), (9164, 30595), (11455, 24476), (12238, 22910), (16669, 16820)]