21270180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4993}}^1$

素因数の和:5076

約数の個数: 48

約数和(自身を含む): 60407424

約数和(自身を除く): 39137244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4993, 9986, 14979, 19972, 24965, 29958, 49930, 59916, 74895, 99860, 149790, 299580, 354503, 709006, 1063509, 1418012, 1772515, 2127018, 3545030, 4254036, 5317545, 7090060, 10635090, 21270180]

約数ペア:

[(1, 21270180), (2, 10635090), (3, 7090060), (4, 5317545), (5, 4254036), (6, 3545030), (10, 2127018), (12, 1772515), (15, 1418012), (20, 1063509), (30, 709006), (60, 354503), (71, 299580), (142, 149790), (213, 99860), (284, 74895), (355, 59916), (426, 49930), (710, 29958), (852, 24965), (1065, 19972), (1420, 14979), (2130, 9986), (4260, 4993)]