18814900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 45168984

約数和(自身を除く): 26354084

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 41, 50, 52, 65, 82, 100, 130, 164, 205, 260, 325, 353, 410, 533, 650, 706, 820, 1025, 1066, 1300, 1412, 1765, 2050, 2132, 2665, 3530, 4100, 4589, 5330, 7060, 8825, 9178, 10660, 13325, 14473, 17650, 18356, 22945, 26650, 28946, 35300, 45890, 53300, 57892, 72365, 91780, 114725, 144730, 188149, 229450, 289460, 361825, 376298, 458900, 723650, 752596, 940745, 1447300, 1881490, 3762980, 4703725, 9407450, 18814900]

約数ペア:

[(1, 18814900), (2, 9407450), (4, 4703725), (5, 3762980), (10, 1881490), (13, 1447300), (20, 940745), (25, 752596), (26, 723650), (41, 458900), (50, 376298), (52, 361825), (65, 289460), (82, 229450), (100, 188149), (130, 144730), (164, 114725), (205, 91780), (260, 72365), (325, 57892), (353, 53300), (410, 45890), (533, 35300), (650, 28946), (706, 26650), (820, 22945), (1025, 18356), (1066, 17650), (1300, 14473), (1412, 13325), (1765, 10660), (2050, 9178), (2132, 8825), (2665, 7060), (3530, 5330), (4100, 4589)]