21685560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13901}}^1$

素因数の和:13928

約数の個数: 64

約数和(自身を含む): 70066080

約数和(自身を除く): 48380520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13901, 27802, 41703, 55604, 69505, 83406, 111208, 139010, 166812, 180713, 208515, 278020, 333624, 361426, 417030, 542139, 556040, 722852, 834060, 903565, 1084278, 1445704, 1668120, 1807130, 2168556, 2710695, 3614260, 4337112, 5421390, 7228520, 10842780, 21685560]

約数ペア:

[(1, 21685560), (2, 10842780), (3, 7228520), (4, 5421390), (5, 4337112), (6, 3614260), (8, 2710695), (10, 2168556), (12, 1807130), (13, 1668120), (15, 1445704), (20, 1084278), (24, 903565), (26, 834060), (30, 722852), (39, 556040), (40, 542139), (52, 417030), (60, 361426), (65, 333624), (78, 278020), (104, 208515), (120, 180713), (130, 166812), (156, 139010), (195, 111208), (260, 83406), (312, 69505), (390, 55604), (520, 41703), (780, 27802), (1560, 13901)]