19780410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{757}}^1$

素因数の和:847

約数の個数: 64

約数和(自身を含む): 51956352

約数和(自身を除く): 32175942

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 67, 78, 130, 134, 195, 201, 335, 390, 402, 670, 757, 871, 1005, 1514, 1742, 2010, 2271, 2613, 3785, 4355, 4542, 5226, 7570, 8710, 9841, 11355, 13065, 19682, 22710, 26130, 29523, 49205, 50719, 59046, 98410, 101438, 147615, 152157, 253595, 295230, 304314, 507190, 659347, 760785, 1318694, 1521570, 1978041, 3296735, 3956082, 6593470, 9890205, 19780410]

約数ペア:

[(1, 19780410), (2, 9890205), (3, 6593470), (5, 3956082), (6, 3296735), (10, 1978041), (13, 1521570), (15, 1318694), (26, 760785), (30, 659347), (39, 507190), (65, 304314), (67, 295230), (78, 253595), (130, 152157), (134, 147615), (195, 101438), (201, 98410), (335, 59046), (390, 50719), (402, 49205), (670, 29523), (757, 26130), (871, 22710), (1005, 19682), (1514, 13065), (1742, 11355), (2010, 9841), (2271, 8710), (2613, 7570), (3785, 5226), (4355, 4542)]