21373216

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:517

約数の個数: 48

約数和(自身を含む): 45110520

約数和(自身を除く): 23737304

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 101, 136, 202, 272, 389, 404, 544, 778, 808, 1556, 1616, 1717, 3112, 3232, 3434, 6224, 6613, 6868, 12448, 13226, 13736, 26452, 27472, 39289, 52904, 54944, 78578, 105808, 157156, 211616, 314312, 628624, 667913, 1257248, 1335826, 2671652, 5343304, 10686608, 21373216]

約数ペア:

[(1, 21373216), (2, 10686608), (4, 5343304), (8, 2671652), (16, 1335826), (17, 1257248), (32, 667913), (34, 628624), (68, 314312), (101, 211616), (136, 157156), (202, 105808), (272, 78578), (389, 54944), (404, 52904), (544, 39289), (778, 27472), (808, 26452), (1556, 13736), (1616, 13226), (1717, 12448), (3112, 6868), (3232, 6613), (3434, 6224)]