21105296

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2503}}^1$

素因数の和:2559

約数の個数: 40

約数和(自身を含む): 44711424

約数和(自身を除く): 23606128

約数列:

[1, 2, 4, 8, 16, 17, 31, 34, 62, 68, 124, 136, 248, 272, 496, 527, 1054, 2108, 2503, 4216, 5006, 8432, 10012, 20024, 40048, 42551, 77593, 85102, 155186, 170204, 310372, 340408, 620744, 680816, 1241488, 1319081, 2638162, 5276324, 10552648, 21105296]

約数ペア:

[(1, 21105296), (2, 10552648), (4, 5276324), (8, 2638162), (16, 1319081), (17, 1241488), (31, 680816), (34, 620744), (62, 340408), (68, 310372), (124, 170204), (136, 155186), (248, 85102), (272, 77593), (496, 42551), (527, 40048), (1054, 20024), (2108, 10012), (2503, 8432), (4216, 5006)]