218989940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{2657}}^1$

素因数の和:2996

約数の個数: 48

約数和(自身を含む): 497003472

約数和(自身を除く): 278013532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 317, 634, 1268, 1585, 2657, 3170, 4121, 5314, 6340, 8242, 10628, 13285, 16484, 20605, 26570, 34541, 41210, 53140, 69082, 82420, 138164, 172705, 345410, 690820, 842269, 1684538, 3369076, 4211345, 8422690, 10949497, 16845380, 21898994, 43797988, 54747485, 109494970, 218989940]

約数ペア:

[(1, 218989940), (2, 109494970), (4, 54747485), (5, 43797988), (10, 21898994), (13, 16845380), (20, 10949497), (26, 8422690), (52, 4211345), (65, 3369076), (130, 1684538), (260, 842269), (317, 690820), (634, 345410), (1268, 172705), (1585, 138164), (2657, 82420), (3170, 69082), (4121, 53140), (5314, 41210), (6340, 34541), (8242, 26570), (10628, 20605), (13285, 16484)]