28705960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{353}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 68817600

約数和(自身を除く): 40111640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 353, 380, 428, 535, 706, 760, 856, 1070, 1412, 1765, 2033, 2140, 2824, 3530, 4066, 4280, 6707, 7060, 8132, 10165, 13414, 14120, 16264, 20330, 26828, 33535, 37771, 40660, 53656, 67070, 75542, 81320, 134140, 151084, 188855, 268280, 302168, 377710, 717649, 755420, 1435298, 1510840, 2870596, 3588245, 5741192, 7176490, 14352980, 28705960]

約数ペア:

[(1, 28705960), (2, 14352980), (4, 7176490), (5, 5741192), (8, 3588245), (10, 2870596), (19, 1510840), (20, 1435298), (38, 755420), (40, 717649), (76, 377710), (95, 302168), (107, 268280), (152, 188855), (190, 151084), (214, 134140), (353, 81320), (380, 75542), (428, 67070), (535, 53656), (706, 40660), (760, 37771), (856, 33535), (1070, 26828), (1412, 20330), (1765, 16264), (2033, 14120), (2140, 13414), (2824, 10165), (3530, 8132), (4066, 7060), (4280, 6707)]