19895190

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{449}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 54950400

約数和(自身を除く): 35055210

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 211, 422, 449, 633, 898, 1055, 1266, 1347, 1477, 2110, 2245, 2694, 2954, 3143, 3165, 4431, 4490, 6286, 6330, 6735, 7385, 8862, 9429, 13470, 14770, 15715, 18858, 22155, 31430, 44310, 47145, 94290, 94739, 189478, 284217, 473695, 568434, 663173, 947390, 1326346, 1421085, 1989519, 2842170, 3315865, 3979038, 6631730, 9947595, 19895190]

約数ペア:

[(1, 19895190), (2, 9947595), (3, 6631730), (5, 3979038), (6, 3315865), (7, 2842170), (10, 1989519), (14, 1421085), (15, 1326346), (21, 947390), (30, 663173), (35, 568434), (42, 473695), (70, 284217), (105, 189478), (210, 94739), (211, 94290), (422, 47145), (449, 44310), (633, 31430), (898, 22155), (1055, 18858), (1266, 15715), (1347, 14770), (1477, 13470), (2110, 9429), (2245, 8862), (2694, 7385), (2954, 6735), (3143, 6330), (3165, 6286), (4431, 4490)]