648936580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1229}}^1\times {\mathrm{1553}}^1$

素因数の和:2808

約数の個数: 48

約数和(自身を含む): 1445033520

約数和(自身を除く): 796096940

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1229, 1553, 2458, 3106, 4916, 6145, 6212, 7765, 12290, 15530, 20893, 24580, 26401, 31060, 41786, 52802, 83572, 104465, 105604, 132005, 208930, 264010, 417860, 528020, 1908637, 3817274, 7634548, 9543185, 19086370, 32446829, 38172740, 64893658, 129787316, 162234145, 324468290, 648936580]

約数ペア:

[(1, 648936580), (2, 324468290), (4, 162234145), (5, 129787316), (10, 64893658), (17, 38172740), (20, 32446829), (34, 19086370), (68, 9543185), (85, 7634548), (170, 3817274), (340, 1908637), (1229, 528020), (1553, 417860), (2458, 264010), (3106, 208930), (4916, 132005), (6145, 105604), (6212, 104465), (7765, 83572), (12290, 52802), (15530, 41786), (20893, 31060), (24580, 26401)]