978018920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{31387}}^1$

素因数の和:31458

約数の個数: 64

約数和(自身を含む): 2372932800

約数和(自身を除く): 1394913880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 1558, 1640, 3116, 3895, 6232, 7790, 15580, 31160, 31387, 62774, 125548, 156935, 251096, 313870, 596353, 627740, 1192706, 1255480, 1286867, 2385412, 2573734, 2981765, 4770824, 5147468, 5963530, 6434335, 10294936, 11927060, 12868670, 23854120, 24450473, 25737340, 48900946, 51474680, 97801892, 122252365, 195603784, 244504730, 489009460, 978018920]

約数ペア:

[(1, 978018920), (2, 489009460), (4, 244504730), (5, 195603784), (8, 122252365), (10, 97801892), (19, 51474680), (20, 48900946), (38, 25737340), (40, 24450473), (41, 23854120), (76, 12868670), (82, 11927060), (95, 10294936), (152, 6434335), (164, 5963530), (190, 5147468), (205, 4770824), (328, 2981765), (380, 2573734), (410, 2385412), (760, 1286867), (779, 1255480), (820, 1192706), (1558, 627740), (1640, 596353), (3116, 313870), (3895, 251096), (6232, 156935), (7790, 125548), (15580, 62774), (31160, 31387)]