20915580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2659

約数の個数: 96

約数和(自身を含む): 70479360

約数和(自身を除く): 49563780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2621, 2660, 3990, 5242, 7863, 7980, 10484, 13105, 15726, 18347, 26210, 31452, 36694, 39315, 49799, 52420, 55041, 73388, 78630, 91735, 99598, 110082, 149397, 157260, 183470, 199196, 220164, 248995, 275205, 298794, 348593, 366940, 497990, 550410, 597588, 697186, 746985, 995980, 1045779, 1100820, 1394372, 1493970, 1742965, 2091558, 2987940, 3485930, 4183116, 5228895, 6971860, 10457790, 20915580]

約数ペア:

[(1, 20915580), (2, 10457790), (3, 6971860), (4, 5228895), (5, 4183116), (6, 3485930), (7, 2987940), (10, 2091558), (12, 1742965), (14, 1493970), (15, 1394372), (19, 1100820), (20, 1045779), (21, 995980), (28, 746985), (30, 697186), (35, 597588), (38, 550410), (42, 497990), (57, 366940), (60, 348593), (70, 298794), (76, 275205), (84, 248995), (95, 220164), (105, 199196), (114, 183470), (133, 157260), (140, 149397), (190, 110082), (210, 99598), (228, 91735), (266, 78630), (285, 73388), (380, 55041), (399, 52420), (420, 49799), (532, 39315), (570, 36694), (665, 31452), (798, 26210), (1140, 18347), (1330, 15726), (1596, 13105), (1995, 10484), (2621, 7980), (2660, 7863), (3990, 5242)]