21877240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7103}}^1$

素因数の和:7132

約数の個数: 64

約数和(自身を含む): 61378560

約数和(自身を除く): 39501320

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 7103, 14206, 28412, 35515, 49721, 56824, 71030, 78133, 99442, 142060, 156266, 198884, 248605, 284120, 312532, 390665, 397768, 497210, 546931, 625064, 781330, 994420, 1093862, 1562660, 1988840, 2187724, 2734655, 3125320, 4375448, 5469310, 10938620, 21877240]

約数ペア:

[(1, 21877240), (2, 10938620), (4, 5469310), (5, 4375448), (7, 3125320), (8, 2734655), (10, 2187724), (11, 1988840), (14, 1562660), (20, 1093862), (22, 994420), (28, 781330), (35, 625064), (40, 546931), (44, 497210), (55, 397768), (56, 390665), (70, 312532), (77, 284120), (88, 248605), (110, 198884), (140, 156266), (154, 142060), (220, 99442), (280, 78133), (308, 71030), (385, 56824), (440, 49721), (616, 35515), (770, 28412), (1540, 14206), (3080, 7103)]