21465730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{883}}^1$

素因数の和:931

約数の個数: 64

約数和(自身を含む): 48117888

約数和(自身を除く): 26652158

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 26, 34, 55, 65, 85, 110, 130, 143, 170, 187, 221, 286, 374, 442, 715, 883, 935, 1105, 1430, 1766, 1870, 2210, 2431, 4415, 4862, 8830, 9713, 11479, 12155, 15011, 19426, 22958, 24310, 30022, 48565, 57395, 75055, 97130, 114790, 126269, 150110, 165121, 195143, 252538, 330242, 390286, 631345, 825605, 975715, 1262690, 1651210, 1951430, 2146573, 4293146, 10732865, 21465730]

約数ペア:

[(1, 21465730), (2, 10732865), (5, 4293146), (10, 2146573), (11, 1951430), (13, 1651210), (17, 1262690), (22, 975715), (26, 825605), (34, 631345), (55, 390286), (65, 330242), (85, 252538), (110, 195143), (130, 165121), (143, 150110), (170, 126269), (187, 114790), (221, 97130), (286, 75055), (374, 57395), (442, 48565), (715, 30022), (883, 24310), (935, 22958), (1105, 19426), (1430, 15011), (1766, 12155), (1870, 11479), (2210, 9713), (2431, 8830), (4415, 4862)]