20820436

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1217}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 45835776

約数和(自身を除く): 25015340

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 47, 52, 91, 94, 182, 188, 329, 364, 611, 658, 1217, 1222, 1316, 2434, 2444, 4277, 4868, 8519, 8554, 15821, 17038, 17108, 31642, 34076, 57199, 63284, 110747, 114398, 221494, 228796, 400393, 442988, 743587, 800786, 1487174, 1601572, 2974348, 5205109, 10410218, 20820436]

約数ペア:

[(1, 20820436), (2, 10410218), (4, 5205109), (7, 2974348), (13, 1601572), (14, 1487174), (26, 800786), (28, 743587), (47, 442988), (52, 400393), (91, 228796), (94, 221494), (182, 114398), (188, 110747), (329, 63284), (364, 57199), (611, 34076), (658, 31642), (1217, 17108), (1222, 17038), (1316, 15821), (2434, 8554), (2444, 8519), (4277, 4868)]