21129810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3187}}^1$

素因数の和:3227

約数の個数: 64

約数和(自身を含む): 57843072

約数和(自身を除く): 36713262

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 195, 221, 255, 390, 442, 510, 663, 1105, 1326, 2210, 3187, 3315, 6374, 6630, 9561, 15935, 19122, 31870, 41431, 47805, 54179, 82862, 95610, 108358, 124293, 162537, 207155, 248586, 270895, 325074, 414310, 541790, 621465, 704327, 812685, 1242930, 1408654, 1625370, 2112981, 3521635, 4225962, 7043270, 10564905, 21129810]

約数ペア:

[(1, 21129810), (2, 10564905), (3, 7043270), (5, 4225962), (6, 3521635), (10, 2112981), (13, 1625370), (15, 1408654), (17, 1242930), (26, 812685), (30, 704327), (34, 621465), (39, 541790), (51, 414310), (65, 325074), (78, 270895), (85, 248586), (102, 207155), (130, 162537), (170, 124293), (195, 108358), (221, 95610), (255, 82862), (390, 54179), (442, 47805), (510, 41431), (663, 31870), (1105, 19122), (1326, 15935), (2210, 9561), (3187, 6630), (3315, 6374)]