399441840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{237763}}^1$

素因数の和:237786

約数の個数: 80

約数和(自身を含む): 1415171328

約数和(自身を除く): 1015729488

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 237763, 475526, 713289, 951052, 1188815, 1426578, 1664341, 1902104, 2377630, 2853156, 3328682, 3566445, 3804208, 4755260, 4993023, 5706312, 6657364, 7132890, 8321705, 9510520, 9986046, 11412624, 13314728, 14265780, 16643410, 19021040, 19972092, 24965115, 26629456, 28531560, 33286820, 39944184, 49930230, 57063120, 66573640, 79888368, 99860460, 133147280, 199720920, 399441840]

約数ペア:

[(1, 399441840), (2, 199720920), (3, 133147280), (4, 99860460), (5, 79888368), (6, 66573640), (7, 57063120), (8, 49930230), (10, 39944184), (12, 33286820), (14, 28531560), (15, 26629456), (16, 24965115), (20, 19972092), (21, 19021040), (24, 16643410), (28, 14265780), (30, 13314728), (35, 11412624), (40, 9986046), (42, 9510520), (48, 8321705), (56, 7132890), (60, 6657364), (70, 5706312), (80, 4993023), (84, 4755260), (105, 3804208), (112, 3566445), (120, 3328682), (140, 2853156), (168, 2377630), (210, 1902104), (240, 1664341), (280, 1426578), (336, 1188815), (420, 951052), (560, 713289), (840, 475526), (1680, 237763)]