18896940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{379}}^1$

素因数の和:671

約数の個数: 72

約数和(自身を含む): 57679440

約数和(自身を除く): 38782500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 277, 379, 554, 758, 831, 1108, 1137, 1385, 1516, 1662, 1895, 2274, 2493, 2770, 3324, 3411, 3790, 4155, 4548, 4986, 5540, 5685, 6822, 7580, 8310, 9972, 11370, 12465, 13644, 16620, 17055, 22740, 24930, 34110, 49860, 68220, 104983, 209966, 314949, 419932, 524915, 629898, 944847, 1049830, 1259796, 1574745, 1889694, 2099660, 3149490, 3779388, 4724235, 6298980, 9448470, 18896940]

約数ペア:

[(1, 18896940), (2, 9448470), (3, 6298980), (4, 4724235), (5, 3779388), (6, 3149490), (9, 2099660), (10, 1889694), (12, 1574745), (15, 1259796), (18, 1049830), (20, 944847), (30, 629898), (36, 524915), (45, 419932), (60, 314949), (90, 209966), (180, 104983), (277, 68220), (379, 49860), (554, 34110), (758, 24930), (831, 22740), (1108, 17055), (1137, 16620), (1385, 13644), (1516, 12465), (1662, 11370), (1895, 9972), (2274, 8310), (2493, 7580), (2770, 6822), (3324, 5685), (3411, 5540), (3790, 4986), (4155, 4548)]