21803013

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:519

約数の個数: 40

約数和(自身を含む): 35467520

約数和(自身を除く): 13664507

約数列:

[1, 3, 9, 19, 27, 31, 57, 81, 93, 171, 279, 457, 513, 589, 837, 1371, 1539, 1767, 2511, 4113, 5301, 8683, 12339, 14167, 15903, 26049, 37017, 42501, 47709, 78147, 127503, 234441, 269173, 382509, 703323, 807519, 1147527, 2422557, 7267671, 21803013]

約数ペア:

[(1, 21803013), (3, 7267671), (9, 2422557), (19, 1147527), (27, 807519), (31, 703323), (57, 382509), (81, 269173), (93, 234441), (171, 127503), (279, 78147), (457, 47709), (513, 42501), (589, 37017), (837, 26049), (1371, 15903), (1539, 14167), (1767, 12339), (2511, 8683), (4113, 5301)]