620920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1$

素因数の和:92

約数の個数: 48

約数和(自身を含む): 1508760

約数和(自身を除く): 887840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 361, 380, 430, 722, 760, 817, 860, 1444, 1634, 1720, 1805, 2888, 3268, 3610, 4085, 6536, 7220, 8170, 14440, 15523, 16340, 31046, 32680, 62092, 77615, 124184, 155230, 310460, 620920]

約数ペア:

[(1, 620920), (2, 310460), (4, 155230), (5, 124184), (8, 77615), (10, 62092), (19, 32680), (20, 31046), (38, 16340), (40, 15523), (43, 14440), (76, 8170), (86, 7220), (95, 6536), (152, 4085), (172, 3610), (190, 3268), (215, 2888), (344, 1805), (361, 1720), (380, 1634), (430, 1444), (722, 860), (760, 817)]