278066320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{21589}}^1$

素因数の和:21632

約数の個数: 80

約数和(自身を含む): 771022080

約数和(自身を除く): 492955760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12880, 21589, 43178, 86356, 107945, 151123, 172712, 215890, 302246, 345424, 431780, 496547, 604492, 755615, 863560, 993094, 1208984, 1511230, 1727120, 1986188, 2417968, 2482735, 3022460, 3475829, 3972376, 4965470, 6044920, 6951658, 7944752, 9930940, 12089840, 13903316, 17379145, 19861880, 27806632, 34758290, 39723760, 55613264, 69516580, 139033160, 278066320]

約数ペア:

[(1, 278066320), (2, 139033160), (4, 69516580), (5, 55613264), (7, 39723760), (8, 34758290), (10, 27806632), (14, 19861880), (16, 17379145), (20, 13903316), (23, 12089840), (28, 9930940), (35, 7944752), (40, 6951658), (46, 6044920), (56, 4965470), (70, 3972376), (80, 3475829), (92, 3022460), (112, 2482735), (115, 2417968), (140, 1986188), (161, 1727120), (184, 1511230), (230, 1208984), (280, 993094), (322, 863560), (368, 755615), (460, 604492), (560, 496547), (644, 431780), (805, 345424), (920, 302246), (1288, 215890), (1610, 172712), (1840, 151123), (2576, 107945), (3220, 86356), (6440, 43178), (12880, 21589)]