20976410

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 96

約数和(自身を含む): 49124880

約数和(自身を除く): 28148470

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 37, 49, 65, 70, 74, 89, 91, 98, 130, 178, 182, 185, 245, 259, 370, 445, 455, 481, 490, 518, 623, 637, 890, 910, 962, 1157, 1246, 1274, 1295, 1813, 2314, 2405, 2590, 3115, 3185, 3293, 3367, 3626, 4361, 4810, 5785, 6230, 6370, 6586, 6734, 8099, 8722, 9065, 11570, 16198, 16465, 16835, 18130, 21805, 23051, 23569, 32930, 33670, 40495, 42809, 43610, 46102, 47138, 56693, 80990, 85618, 113386, 115255, 117845, 161357, 214045, 230510, 235690, 283465, 299663, 322714, 428090, 566930, 599326, 806785, 1498315, 1613570, 2097641, 2996630, 4195282, 10488205, 20976410]

約数ペア:

[(1, 20976410), (2, 10488205), (5, 4195282), (7, 2996630), (10, 2097641), (13, 1613570), (14, 1498315), (26, 806785), (35, 599326), (37, 566930), (49, 428090), (65, 322714), (70, 299663), (74, 283465), (89, 235690), (91, 230510), (98, 214045), (130, 161357), (178, 117845), (182, 115255), (185, 113386), (245, 85618), (259, 80990), (370, 56693), (445, 47138), (455, 46102), (481, 43610), (490, 42809), (518, 40495), (623, 33670), (637, 32930), (890, 23569), (910, 23051), (962, 21805), (1157, 18130), (1246, 16835), (1274, 16465), (1295, 16198), (1813, 11570), (2314, 9065), (2405, 8722), (2590, 8099), (3115, 6734), (3185, 6586), (3293, 6370), (3367, 6230), (3626, 5785), (4361, 4810)]