1285264520

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{59393}}^1$

素因数の和:59945

約数の個数: 32

約数和(自身を含む): 2897239320

約数和(自身を除く): 1611974800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 1082, 2164, 2705, 4328, 5410, 10820, 21640, 59393, 118786, 237572, 296965, 475144, 593930, 1187860, 2375720, 32131613, 64263226, 128526452, 160658065, 257052904, 321316130, 642632260, 1285264520]

約数ペア:

[(1, 1285264520), (2, 642632260), (4, 321316130), (5, 257052904), (8, 160658065), (10, 128526452), (20, 64263226), (40, 32131613), (541, 2375720), (1082, 1187860), (2164, 593930), (2705, 475144), (4328, 296965), (5410, 237572), (10820, 118786), (21640, 59393)]