20915048

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1787}}^1$

素因数の和:1830

約数の個数: 64

約数和(自身を含む): 51494400

約数和(自身を除く): 30579352

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 44, 56, 76, 77, 88, 133, 152, 154, 209, 266, 308, 418, 532, 616, 836, 1064, 1463, 1672, 1787, 2926, 3574, 5852, 7148, 11704, 12509, 14296, 19657, 25018, 33953, 39314, 50036, 67906, 78628, 100072, 135812, 137599, 157256, 237671, 271624, 275198, 373483, 475342, 550396, 746966, 950684, 1100792, 1493932, 1901368, 2614381, 2987864, 5228762, 10457524, 20915048]

約数ペア:

[(1, 20915048), (2, 10457524), (4, 5228762), (7, 2987864), (8, 2614381), (11, 1901368), (14, 1493932), (19, 1100792), (22, 950684), (28, 746966), (38, 550396), (44, 475342), (56, 373483), (76, 275198), (77, 271624), (88, 237671), (133, 157256), (152, 137599), (154, 135812), (209, 100072), (266, 78628), (308, 67906), (418, 50036), (532, 39314), (616, 33953), (836, 25018), (1064, 19657), (1463, 14296), (1672, 12509), (1787, 11704), (2926, 7148), (3574, 5852)]