28911440

素因数分解:

$2^4\times 5^1\times {\mathrm{523}}^1\times {\mathrm{691}}^1$

素因数の和:1227

約数の個数: 40

約数和(自身を含む): 67445088

約数和(自身を除く): 38533648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 523, 691, 1046, 1382, 2092, 2615, 2764, 3455, 4184, 5230, 5528, 6910, 8368, 10460, 11056, 13820, 20920, 27640, 41840, 55280, 361393, 722786, 1445572, 1806965, 2891144, 3613930, 5782288, 7227860, 14455720, 28911440]

約数ペア:

[(1, 28911440), (2, 14455720), (4, 7227860), (5, 5782288), (8, 3613930), (10, 2891144), (16, 1806965), (20, 1445572), (40, 722786), (80, 361393), (523, 55280), (691, 41840), (1046, 27640), (1382, 20920), (2092, 13820), (2615, 11056), (2764, 10460), (3455, 8368), (4184, 6910), (5230, 5528)]