71131915

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 93312000

約数和(自身を除く): 22180085

約数列:

[1, 5, 19, 47, 89, 95, 179, 235, 445, 893, 895, 1691, 3401, 4183, 4465, 8413, 8455, 15931, 17005, 20915, 42065, 79477, 79655, 159847, 302689, 397385, 748757, 799235, 1513445, 3743785, 14226383, 71131915]

約数ペア:

[(1, 71131915), (5, 14226383), (19, 3743785), (47, 1513445), (89, 799235), (95, 748757), (179, 397385), (235, 302689), (445, 159847), (893, 79655), (895, 79477), (1691, 42065), (3401, 20915), (4183, 17005), (4465, 15931), (8413, 8455)]