21028620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5231}}^1$

素因数の和:5310

約数の個数: 48

約数和(自身を含む): 59770368

約数和(自身を除く): 38741748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020, 5231, 10462, 15693, 20924, 26155, 31386, 52310, 62772, 78465, 104620, 156930, 313860, 350477, 700954, 1051431, 1401908, 1752385, 2102862, 3504770, 4205724, 5257155, 7009540, 10514310, 21028620]

約数ペア:

[(1, 21028620), (2, 10514310), (3, 7009540), (4, 5257155), (5, 4205724), (6, 3504770), (10, 2102862), (12, 1752385), (15, 1401908), (20, 1051431), (30, 700954), (60, 350477), (67, 313860), (134, 156930), (201, 104620), (268, 78465), (335, 62772), (402, 52310), (670, 31386), (804, 26155), (1005, 20924), (1340, 15693), (2010, 10462), (4020, 5231)]