78678460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{2239}}^1$

素因数の和:2506

約数の個数: 48

約数和(自身を含む): 189665280

約数和(自身を除く): 110986820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 1004, 1255, 1757, 2239, 2510, 3514, 4478, 5020, 7028, 8785, 8956, 11195, 15673, 17570, 22390, 31346, 35140, 44780, 62692, 78365, 156730, 313460, 561989, 1123978, 2247956, 2809945, 3933923, 5619890, 7867846, 11239780, 15735692, 19669615, 39339230, 78678460]

約数ペア:

[(1, 78678460), (2, 39339230), (4, 19669615), (5, 15735692), (7, 11239780), (10, 7867846), (14, 5619890), (20, 3933923), (28, 2809945), (35, 2247956), (70, 1123978), (140, 561989), (251, 313460), (502, 156730), (1004, 78365), (1255, 62692), (1757, 44780), (2239, 35140), (2510, 31346), (3514, 22390), (4478, 17570), (5020, 15673), (7028, 11195), (8785, 8956)]