20565216

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{101}}^2$

素因数の和:225

約数の個数: 108

約数和(自身を含む): 67505256

約数和(自身を除く): 46940040

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 72, 84, 96, 101, 112, 126, 144, 168, 202, 224, 252, 288, 303, 336, 404, 504, 606, 672, 707, 808, 909, 1008, 1212, 1414, 1616, 1818, 2016, 2121, 2424, 2828, 3232, 3636, 4242, 4848, 5656, 6363, 7272, 8484, 9696, 10201, 11312, 12726, 14544, 16968, 20402, 22624, 25452, 29088, 30603, 33936, 40804, 50904, 61206, 67872, 71407, 81608, 91809, 101808, 122412, 142814, 163216, 183618, 203616, 214221, 244824, 285628, 326432, 367236, 428442, 489648, 571256, 642663, 734472, 856884, 979296, 1142512, 1285326, 1468944, 1713768, 2285024, 2570652, 2937888, 3427536, 5141304, 6855072, 10282608, 20565216]

約数ペア:

[(1, 20565216), (2, 10282608), (3, 6855072), (4, 5141304), (6, 3427536), (7, 2937888), (8, 2570652), (9, 2285024), (12, 1713768), (14, 1468944), (16, 1285326), (18, 1142512), (21, 979296), (24, 856884), (28, 734472), (32, 642663), (36, 571256), (42, 489648), (48, 428442), (56, 367236), (63, 326432), (72, 285628), (84, 244824), (96, 214221), (101, 203616), (112, 183618), (126, 163216), (144, 142814), (168, 122412), (202, 101808), (224, 91809), (252, 81608), (288, 71407), (303, 67872), (336, 61206), (404, 50904), (504, 40804), (606, 33936), (672, 30603), (707, 29088), (808, 25452), (909, 22624), (1008, 20402), (1212, 16968), (1414, 14544), (1616, 12726), (1818, 11312), (2016, 10201), (2121, 9696), (2424, 8484), (2828, 7272), (3232, 6363), (3636, 5656), (4242, 4848)]