21784080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{653}}^1$

素因数の和:808

約数の個数: 80

約数和(自身を含む): 68120640

約数和(自身を除く): 46336560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 653, 695, 834, 1112, 1306, 1390, 1668, 1959, 2085, 2224, 2612, 2780, 3265, 3336, 3918, 4170, 5224, 5560, 6530, 6672, 7836, 8340, 9795, 10448, 11120, 13060, 15672, 16680, 19590, 26120, 31344, 33360, 39180, 52240, 78360, 90767, 156720, 181534, 272301, 363068, 453835, 544602, 726136, 907670, 1089204, 1361505, 1452272, 1815340, 2178408, 2723010, 3630680, 4356816, 5446020, 7261360, 10892040, 21784080]

約数ペア:

[(1, 21784080), (2, 10892040), (3, 7261360), (4, 5446020), (5, 4356816), (6, 3630680), (8, 2723010), (10, 2178408), (12, 1815340), (15, 1452272), (16, 1361505), (20, 1089204), (24, 907670), (30, 726136), (40, 544602), (48, 453835), (60, 363068), (80, 272301), (120, 181534), (139, 156720), (240, 90767), (278, 78360), (417, 52240), (556, 39180), (653, 33360), (695, 31344), (834, 26120), (1112, 19590), (1306, 16680), (1390, 15672), (1668, 13060), (1959, 11120), (2085, 10448), (2224, 9795), (2612, 8340), (2780, 7836), (3265, 6672), (3336, 6530), (3918, 5560), (4170, 5224)]