21980368

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{347}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 44273952

約数和(自身を除く): 22293584

約数列:

[1, 2, 4, 8, 16, 37, 74, 107, 148, 214, 296, 347, 428, 592, 694, 856, 1388, 1712, 2776, 3959, 5552, 7918, 12839, 15836, 25678, 31672, 37129, 51356, 63344, 74258, 102712, 148516, 205424, 297032, 594064, 1373773, 2747546, 5495092, 10990184, 21980368]

約数ペア:

[(1, 21980368), (2, 10990184), (4, 5495092), (8, 2747546), (16, 1373773), (37, 594064), (74, 297032), (107, 205424), (148, 148516), (214, 102712), (296, 74258), (347, 63344), (428, 51356), (592, 37129), (694, 31672), (856, 25678), (1388, 15836), (1712, 12839), (2776, 7918), (3959, 5552)]