21374320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:358

約数の個数: 80

約数和(自身を含む): 54960768

約数和(自身を除く): 33586448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 214, 220, 227, 428, 440, 454, 535, 856, 880, 908, 1070, 1135, 1177, 1712, 1816, 2140, 2270, 2354, 2497, 3632, 4280, 4540, 4708, 4994, 5885, 8560, 9080, 9416, 9988, 11770, 12485, 18160, 18832, 19976, 23540, 24289, 24970, 39952, 47080, 48578, 49940, 94160, 97156, 99880, 121445, 194312, 199760, 242890, 267179, 388624, 485780, 534358, 971560, 1068716, 1335895, 1943120, 2137432, 2671790, 4274864, 5343580, 10687160, 21374320]

約数ペア:

[(1, 21374320), (2, 10687160), (4, 5343580), (5, 4274864), (8, 2671790), (10, 2137432), (11, 1943120), (16, 1335895), (20, 1068716), (22, 971560), (40, 534358), (44, 485780), (55, 388624), (80, 267179), (88, 242890), (107, 199760), (110, 194312), (176, 121445), (214, 99880), (220, 97156), (227, 94160), (428, 49940), (440, 48578), (454, 47080), (535, 39952), (856, 24970), (880, 24289), (908, 23540), (1070, 19976), (1135, 18832), (1177, 18160), (1712, 12485), (1816, 11770), (2140, 9988), (2270, 9416), (2354, 9080), (2497, 8560), (3632, 5885), (4280, 4994), (4540, 4708)]