21683792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1709}}^1$

素因数の和:1791

約数の個数: 40

約数和(自身を含む): 46012680

約数和(自身を除く): 24328888

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 1709, 3172, 3418, 6344, 6836, 12688, 13672, 22217, 27344, 44434, 88868, 104249, 177736, 208498, 355472, 416996, 833992, 1355237, 1667984, 2710474, 5420948, 10841896, 21683792]

約数ペア:

[(1, 21683792), (2, 10841896), (4, 5420948), (8, 2710474), (13, 1667984), (16, 1355237), (26, 833992), (52, 416996), (61, 355472), (104, 208498), (122, 177736), (208, 104249), (244, 88868), (488, 44434), (793, 27344), (976, 22217), (1586, 13672), (1709, 12688), (3172, 6836), (3418, 6344)]