20621790

素因数分解:

$2^1\times 3^4\times 5^1\times 7^1\times {\mathrm{3637}}^1$

素因数の和:3663

約数の個数: 80

約数和(自身を含む): 63388512

約数和(自身を除く): 42766722

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 81, 90, 105, 126, 135, 162, 189, 210, 270, 315, 378, 405, 567, 630, 810, 945, 1134, 1890, 2835, 3637, 5670, 7274, 10911, 18185, 21822, 25459, 32733, 36370, 50918, 54555, 65466, 76377, 98199, 109110, 127295, 152754, 163665, 196398, 229131, 254590, 294597, 327330, 381885, 458262, 490995, 589194, 687393, 763770, 981990, 1145655, 1374786, 1472985, 2062179, 2291310, 2945970, 3436965, 4124358, 6873930, 10310895, 20621790]

約数ペア:

[(1, 20621790), (2, 10310895), (3, 6873930), (5, 4124358), (6, 3436965), (7, 2945970), (9, 2291310), (10, 2062179), (14, 1472985), (15, 1374786), (18, 1145655), (21, 981990), (27, 763770), (30, 687393), (35, 589194), (42, 490995), (45, 458262), (54, 381885), (63, 327330), (70, 294597), (81, 254590), (90, 229131), (105, 196398), (126, 163665), (135, 152754), (162, 127295), (189, 109110), (210, 98199), (270, 76377), (315, 65466), (378, 54555), (405, 50918), (567, 36370), (630, 32733), (810, 25459), (945, 21822), (1134, 18185), (1890, 10911), (2835, 7274), (3637, 5670)]