19400220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:284

約数の個数: 144

約数和(自身を含む): 68402880

約数和(自身を除く): 49002660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 89, 90, 105, 126, 140, 173, 178, 180, 210, 252, 267, 315, 346, 356, 420, 445, 519, 534, 623, 630, 692, 801, 865, 890, 1038, 1068, 1211, 1246, 1260, 1335, 1557, 1602, 1730, 1780, 1869, 2076, 2422, 2492, 2595, 2670, 3114, 3115, 3204, 3460, 3633, 3738, 4005, 4844, 5190, 5340, 5607, 6055, 6228, 6230, 7266, 7476, 7785, 8010, 9345, 10380, 10899, 11214, 12110, 12460, 14532, 15397, 15570, 16020, 18165, 18690, 21798, 22428, 24220, 28035, 30794, 31140, 36330, 37380, 43596, 46191, 54495, 56070, 61588, 72660, 76985, 92382, 107779, 108990, 112140, 138573, 153970, 184764, 215558, 217980, 230955, 277146, 307940, 323337, 431116, 461910, 538895, 554292, 646674, 692865, 923820, 970011, 1077790, 1293348, 1385730, 1616685, 1940022, 2155580, 2771460, 3233370, 3880044, 4850055, 6466740, 9700110, 19400220]

約数ペア:

[(1, 19400220), (2, 9700110), (3, 6466740), (4, 4850055), (5, 3880044), (6, 3233370), (7, 2771460), (9, 2155580), (10, 1940022), (12, 1616685), (14, 1385730), (15, 1293348), (18, 1077790), (20, 970011), (21, 923820), (28, 692865), (30, 646674), (35, 554292), (36, 538895), (42, 461910), (45, 431116), (60, 323337), (63, 307940), (70, 277146), (84, 230955), (89, 217980), (90, 215558), (105, 184764), (126, 153970), (140, 138573), (173, 112140), (178, 108990), (180, 107779), (210, 92382), (252, 76985), (267, 72660), (315, 61588), (346, 56070), (356, 54495), (420, 46191), (445, 43596), (519, 37380), (534, 36330), (623, 31140), (630, 30794), (692, 28035), (801, 24220), (865, 22428), (890, 21798), (1038, 18690), (1068, 18165), (1211, 16020), (1246, 15570), (1260, 15397), (1335, 14532), (1557, 12460), (1602, 12110), (1730, 11214), (1780, 10899), (1869, 10380), (2076, 9345), (2422, 8010), (2492, 7785), (2595, 7476), (2670, 7266), (3114, 6230), (3115, 6228), (3204, 6055), (3460, 5607), (3633, 5340), (3738, 5190), (4005, 4844)]