21534070

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{643}}^1$

素因数の和:864

約数の個数: 32

約数和(自身を含む): 41313888

約数和(自身を除く): 19779818

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 197, 394, 643, 985, 1286, 1970, 3215, 3349, 6430, 6698, 10931, 16745, 21862, 33490, 54655, 109310, 126671, 253342, 633355, 1266710, 2153407, 4306814, 10767035, 21534070]

約数ペア:

[(1, 21534070), (2, 10767035), (5, 4306814), (10, 2153407), (17, 1266710), (34, 633355), (85, 253342), (170, 126671), (197, 109310), (394, 54655), (643, 33490), (985, 21862), (1286, 16745), (1970, 10931), (3215, 6698), (3349, 6430)]