21911344

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 80

約数和(自身を含む): 53121600

約数和(自身を除く): 31210256

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 101, 104, 112, 149, 182, 202, 208, 298, 364, 404, 596, 707, 728, 808, 1043, 1192, 1313, 1414, 1456, 1616, 1937, 2086, 2384, 2626, 2828, 3874, 4172, 5252, 5656, 7748, 8344, 9191, 10504, 11312, 13559, 15049, 15496, 16688, 18382, 21008, 27118, 30098, 30992, 36764, 54236, 60196, 73528, 105343, 108472, 120392, 147056, 195637, 210686, 216944, 240784, 391274, 421372, 782548, 842744, 1369459, 1565096, 1685488, 2738918, 3130192, 5477836, 10955672, 21911344]

約数ペア:

[(1, 21911344), (2, 10955672), (4, 5477836), (7, 3130192), (8, 2738918), (13, 1685488), (14, 1565096), (16, 1369459), (26, 842744), (28, 782548), (52, 421372), (56, 391274), (91, 240784), (101, 216944), (104, 210686), (112, 195637), (149, 147056), (182, 120392), (202, 108472), (208, 105343), (298, 73528), (364, 60196), (404, 54236), (596, 36764), (707, 30992), (728, 30098), (808, 27118), (1043, 21008), (1192, 18382), (1313, 16688), (1414, 15496), (1456, 15049), (1616, 13559), (1937, 11312), (2086, 10504), (2384, 9191), (2626, 8344), (2828, 7748), (3874, 5656), (4172, 5252)]