21956044

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 22950356

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 149, 187, 197, 298, 374, 394, 596, 748, 788, 1639, 2167, 2533, 3278, 3349, 4334, 5066, 6556, 6698, 8668, 10132, 13396, 27863, 29353, 36839, 55726, 58706, 73678, 111452, 117412, 147356, 322883, 499001, 645766, 998002, 1291532, 1996004, 5489011, 10978022, 21956044]

約数ペア:

[(1, 21956044), (2, 10978022), (4, 5489011), (11, 1996004), (17, 1291532), (22, 998002), (34, 645766), (44, 499001), (68, 322883), (149, 147356), (187, 117412), (197, 111452), (298, 73678), (374, 58706), (394, 55726), (596, 36839), (748, 29353), (788, 27863), (1639, 13396), (2167, 10132), (2533, 8668), (3278, 6698), (3349, 6556), (4334, 5066)]