201521908

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{23911}}^1$

素因数の和:23972

約数の個数: 36

約数和(自身を含む): 419799072

約数和(自身を除く): 218277164

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 4214, 8428, 23911, 47822, 95644, 167377, 334754, 669508, 1028173, 1171639, 2056346, 2343278, 4112692, 4686556, 7197211, 14394422, 28788844, 50380477, 100760954, 201521908]

約数ペア:

[(1, 201521908), (2, 100760954), (4, 50380477), (7, 28788844), (14, 14394422), (28, 7197211), (43, 4686556), (49, 4112692), (86, 2343278), (98, 2056346), (172, 1171639), (196, 1028173), (301, 669508), (602, 334754), (1204, 167377), (2107, 95644), (4214, 47822), (8428, 23911)]