20213055

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{503}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17526465

約数列:

[1, 3, 5, 9, 15, 19, 45, 47, 57, 95, 141, 171, 235, 285, 423, 503, 705, 855, 893, 1509, 2115, 2515, 2679, 4465, 4527, 7545, 8037, 9557, 13395, 22635, 23641, 28671, 40185, 47785, 70923, 86013, 118205, 143355, 212769, 354615, 430065, 449179, 1063845, 1347537, 2245895, 4042611, 6737685, 20213055]

約数ペア:

[(1, 20213055), (3, 6737685), (5, 4042611), (9, 2245895), (15, 1347537), (19, 1063845), (45, 449179), (47, 430065), (57, 354615), (95, 212769), (141, 143355), (171, 118205), (235, 86013), (285, 70923), (423, 47785), (503, 40185), (705, 28671), (855, 23641), (893, 22635), (1509, 13395), (2115, 9557), (2515, 8037), (2679, 7545), (4465, 4527)]