19720770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 49144320

約数和(自身を除く): 29423550

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 79, 106, 157, 158, 159, 237, 265, 314, 318, 395, 471, 474, 530, 785, 790, 795, 942, 1185, 1570, 1590, 2355, 2370, 4187, 4710, 8321, 8374, 12403, 12561, 16642, 20935, 24806, 24963, 25122, 37209, 41605, 41870, 49926, 62015, 62805, 74418, 83210, 124030, 124815, 125610, 186045, 249630, 372090, 657359, 1314718, 1972077, 3286795, 3944154, 6573590, 9860385, 19720770]

約数ペア:

[(1, 19720770), (2, 9860385), (3, 6573590), (5, 3944154), (6, 3286795), (10, 1972077), (15, 1314718), (30, 657359), (53, 372090), (79, 249630), (106, 186045), (157, 125610), (158, 124815), (159, 124030), (237, 83210), (265, 74418), (314, 62805), (318, 62015), (395, 49926), (471, 41870), (474, 41605), (530, 37209), (785, 25122), (790, 24963), (795, 24806), (942, 20935), (1185, 16642), (1570, 12561), (1590, 12403), (2355, 8374), (2370, 8321), (4187, 4710)]