204520450

素因数分解:

$2^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:631

約数の個数: 48

約数和(自身を含む): 389383560

約数和(自身を除く): 184863110

約数列:

[1, 2, 5, 10, 25, 50, 73, 137, 146, 274, 365, 409, 685, 730, 818, 1370, 1825, 2045, 3425, 3650, 4090, 6850, 10001, 10225, 20002, 20450, 29857, 50005, 56033, 59714, 100010, 112066, 149285, 250025, 280165, 298570, 500050, 560330, 746425, 1400825, 1492850, 2801650, 4090409, 8180818, 20452045, 40904090, 102260225, 204520450]

約数ペア:

[(1, 204520450), (2, 102260225), (5, 40904090), (10, 20452045), (25, 8180818), (50, 4090409), (73, 2801650), (137, 1492850), (146, 1400825), (274, 746425), (365, 560330), (409, 500050), (685, 298570), (730, 280165), (818, 250025), (1370, 149285), (1825, 112066), (2045, 100010), (3425, 59714), (3650, 56033), (4090, 50005), (6850, 29857), (10001, 20450), (10225, 20002)]