680736840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{810401}}^1$

素因数の和:810422

約数の個数: 64

約数和(自身を含む): 2333957760

約数和(自身を除く): 1653220920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 810401, 1620802, 2431203, 3241604, 4052005, 4862406, 5672807, 6483208, 8104010, 9724812, 11345614, 12156015, 16208020, 17018421, 19449624, 22691228, 24312030, 28364035, 32416040, 34036842, 45382456, 48624060, 56728070, 68073684, 85092105, 97248120, 113456140, 136147368, 170184210, 226912280, 340368420, 680736840]

約数ペア:

[(1, 680736840), (2, 340368420), (3, 226912280), (4, 170184210), (5, 136147368), (6, 113456140), (7, 97248120), (8, 85092105), (10, 68073684), (12, 56728070), (14, 48624060), (15, 45382456), (20, 34036842), (21, 32416040), (24, 28364035), (28, 24312030), (30, 22691228), (35, 19449624), (40, 17018421), (42, 16208020), (56, 12156015), (60, 11345614), (70, 9724812), (84, 8104010), (105, 6483208), (120, 5672807), (140, 4862406), (168, 4052005), (210, 3241604), (280, 2431203), (420, 1620802), (840, 810401)]