12897860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 28449792

約数和(自身を除く): 15551932

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 293, 310, 355, 586, 620, 710, 1172, 1420, 1465, 2201, 2930, 4402, 5860, 8804, 9083, 11005, 18166, 20803, 22010, 36332, 41606, 44020, 45415, 83212, 90830, 104015, 181660, 208030, 416060, 644893, 1289786, 2579572, 3224465, 6448930, 12897860]

約数ペア:

[(1, 12897860), (2, 6448930), (4, 3224465), (5, 2579572), (10, 1289786), (20, 644893), (31, 416060), (62, 208030), (71, 181660), (124, 104015), (142, 90830), (155, 83212), (284, 45415), (293, 44020), (310, 41606), (355, 36332), (586, 22010), (620, 20803), (710, 18166), (1172, 11005), (1420, 9083), (1465, 8804), (2201, 5860), (2930, 4402)]