20635120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:334

約数の個数: 80

約数和(自身を含む): 53032320

約数和(自身を除く): 32397200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 131, 176, 179, 220, 262, 358, 440, 524, 655, 716, 880, 895, 1048, 1310, 1432, 1441, 1790, 1969, 2096, 2620, 2864, 2882, 3580, 3938, 5240, 5764, 7160, 7205, 7876, 9845, 10480, 11528, 14320, 14410, 15752, 19690, 23056, 23449, 28820, 31504, 39380, 46898, 57640, 78760, 93796, 115280, 117245, 157520, 187592, 234490, 257939, 375184, 468980, 515878, 937960, 1031756, 1289695, 1875920, 2063512, 2579390, 4127024, 5158780, 10317560, 20635120]

約数ペア:

[(1, 20635120), (2, 10317560), (4, 5158780), (5, 4127024), (8, 2579390), (10, 2063512), (11, 1875920), (16, 1289695), (20, 1031756), (22, 937960), (40, 515878), (44, 468980), (55, 375184), (80, 257939), (88, 234490), (110, 187592), (131, 157520), (176, 117245), (179, 115280), (220, 93796), (262, 78760), (358, 57640), (440, 46898), (524, 39380), (655, 31504), (716, 28820), (880, 23449), (895, 23056), (1048, 19690), (1310, 15752), (1432, 14410), (1441, 14320), (1790, 11528), (1969, 10480), (2096, 9845), (2620, 7876), (2864, 7205), (2882, 7160), (3580, 5764), (3938, 5240)]