21144944

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:465

約数の個数: 40

約数和(自身を含む): 42780000

約数和(自身を除く): 21635056

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 199, 229, 232, 398, 458, 464, 796, 916, 1592, 1832, 3184, 3664, 5771, 6641, 11542, 13282, 23084, 26564, 45571, 46168, 53128, 91142, 92336, 106256, 182284, 364568, 729136, 1321559, 2643118, 5286236, 10572472, 21144944]

約数ペア:

[(1, 21144944), (2, 10572472), (4, 5286236), (8, 2643118), (16, 1321559), (29, 729136), (58, 364568), (116, 182284), (199, 106256), (229, 92336), (232, 91142), (398, 53128), (458, 46168), (464, 45571), (796, 26564), (916, 23084), (1592, 13282), (1832, 11542), (3184, 6641), (3664, 5771)]