21856356

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:601

約数の個数: 72

約数和(自身を含む): 59439744

約数和(自身を除く): 37583388

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 71, 102, 142, 153, 204, 213, 284, 306, 426, 503, 612, 639, 852, 1006, 1207, 1278, 1509, 2012, 2414, 2556, 3018, 3621, 4527, 4828, 6036, 7242, 8551, 9054, 10863, 14484, 17102, 18108, 21726, 25653, 34204, 35713, 43452, 51306, 71426, 76959, 102612, 107139, 142852, 153918, 214278, 307836, 321417, 428556, 607121, 642834, 1214242, 1285668, 1821363, 2428484, 3642726, 5464089, 7285452, 10928178, 21856356]

約数ペア:

[(1, 21856356), (2, 10928178), (3, 7285452), (4, 5464089), (6, 3642726), (9, 2428484), (12, 1821363), (17, 1285668), (18, 1214242), (34, 642834), (36, 607121), (51, 428556), (68, 321417), (71, 307836), (102, 214278), (142, 153918), (153, 142852), (204, 107139), (213, 102612), (284, 76959), (306, 71426), (426, 51306), (503, 43452), (612, 35713), (639, 34204), (852, 25653), (1006, 21726), (1207, 18108), (1278, 17102), (1509, 14484), (2012, 10863), (2414, 9054), (2556, 8551), (3018, 7242), (3621, 6036), (4527, 4828)]