646646

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:69

約数の個数: 64

約数和(自身を含む): 1451520

約数和(自身を除く): 804874

約数列:

[1, 2, 7, 11, 13, 14, 17, 19, 22, 26, 34, 38, 77, 91, 119, 133, 143, 154, 182, 187, 209, 221, 238, 247, 266, 286, 323, 374, 418, 442, 494, 646, 1001, 1309, 1463, 1547, 1729, 2002, 2261, 2431, 2618, 2717, 2926, 3094, 3458, 3553, 4199, 4522, 4862, 5434, 7106, 8398, 17017, 19019, 24871, 29393, 34034, 38038, 46189, 49742, 58786, 92378, 323323, 646646]

約数ペア:

[(1, 646646), (2, 323323), (7, 92378), (11, 58786), (13, 49742), (14, 46189), (17, 38038), (19, 34034), (22, 29393), (26, 24871), (34, 19019), (38, 17017), (77, 8398), (91, 7106), (119, 5434), (133, 4862), (143, 4522), (154, 4199), (182, 3553), (187, 3458), (209, 3094), (221, 2926), (238, 2717), (247, 2618), (266, 2431), (286, 2261), (323, 2002), (374, 1729), (418, 1547), (442, 1463), (494, 1309), (646, 1001)]