18822320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 48559392

約数和(自身を除く): 29737072

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 73, 80, 88, 110, 146, 176, 220, 292, 293, 365, 440, 584, 586, 730, 803, 880, 1168, 1172, 1460, 1465, 1606, 2344, 2920, 2930, 3212, 3223, 4015, 4688, 5840, 5860, 6424, 6446, 8030, 11720, 12848, 12892, 16060, 16115, 21389, 23440, 25784, 32120, 32230, 42778, 51568, 64240, 64460, 85556, 106945, 128920, 171112, 213890, 235279, 257840, 342224, 427780, 470558, 855560, 941116, 1176395, 1711120, 1882232, 2352790, 3764464, 4705580, 9411160, 18822320]

約数ペア:

[(1, 18822320), (2, 9411160), (4, 4705580), (5, 3764464), (8, 2352790), (10, 1882232), (11, 1711120), (16, 1176395), (20, 941116), (22, 855560), (40, 470558), (44, 427780), (55, 342224), (73, 257840), (80, 235279), (88, 213890), (110, 171112), (146, 128920), (176, 106945), (220, 85556), (292, 64460), (293, 64240), (365, 51568), (440, 42778), (584, 32230), (586, 32120), (730, 25784), (803, 23440), (880, 21389), (1168, 16115), (1172, 16060), (1460, 12892), (1465, 12848), (1606, 11720), (2344, 8030), (2920, 6446), (2930, 6424), (3212, 5860), (3223, 5840), (4015, 4688)]