20073872

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{811}}^1$

素因数の和:856

約数の個数: 80

約数和(自身を含む): 50746752

約数和(自身を除く): 30672880

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 34, 52, 56, 68, 91, 104, 112, 119, 136, 182, 208, 221, 238, 272, 364, 442, 476, 728, 811, 884, 952, 1456, 1547, 1622, 1768, 1904, 3094, 3244, 3536, 5677, 6188, 6488, 10543, 11354, 12376, 12976, 13787, 21086, 22708, 24752, 27574, 42172, 45416, 55148, 73801, 84344, 90832, 96509, 110296, 147602, 168688, 179231, 193018, 220592, 295204, 358462, 386036, 590408, 716924, 772072, 1180816, 1254617, 1433848, 1544144, 2509234, 2867696, 5018468, 10036936, 20073872]

約数ペア:

[(1, 20073872), (2, 10036936), (4, 5018468), (7, 2867696), (8, 2509234), (13, 1544144), (14, 1433848), (16, 1254617), (17, 1180816), (26, 772072), (28, 716924), (34, 590408), (52, 386036), (56, 358462), (68, 295204), (91, 220592), (104, 193018), (112, 179231), (119, 168688), (136, 147602), (182, 110296), (208, 96509), (221, 90832), (238, 84344), (272, 73801), (364, 55148), (442, 45416), (476, 42172), (728, 27574), (811, 24752), (884, 22708), (952, 21086), (1456, 13787), (1547, 12976), (1622, 12376), (1768, 11354), (1904, 10543), (3094, 6488), (3244, 6188), (3536, 5677)]