21131646

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 47609856

約数和(自身を除く): 26478210

約数列:

[1, 2, 3, 6, 17, 31, 34, 41, 51, 62, 82, 93, 102, 123, 163, 186, 246, 326, 489, 527, 697, 978, 1054, 1271, 1394, 1581, 2091, 2542, 2771, 3162, 3813, 4182, 5053, 5542, 6683, 7626, 8313, 10106, 13366, 15159, 16626, 20049, 21607, 30318, 40098, 43214, 64821, 85901, 113611, 129642, 171802, 207173, 227222, 257703, 340833, 414346, 515406, 621519, 681666, 1243038, 3521941, 7043882, 10565823, 21131646]

約数ペア:

[(1, 21131646), (2, 10565823), (3, 7043882), (6, 3521941), (17, 1243038), (31, 681666), (34, 621519), (41, 515406), (51, 414346), (62, 340833), (82, 257703), (93, 227222), (102, 207173), (123, 171802), (163, 129642), (186, 113611), (246, 85901), (326, 64821), (489, 43214), (527, 40098), (697, 30318), (978, 21607), (1054, 20049), (1271, 16626), (1394, 15159), (1581, 13366), (2091, 10106), (2542, 8313), (2771, 7626), (3162, 6683), (3813, 5542), (4182, 5053)]