978440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 2243160

約数和(自身を除く): 1264720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 401, 488, 610, 802, 1220, 1604, 2005, 2440, 3208, 4010, 8020, 16040, 24461, 48922, 97844, 122305, 195688, 244610, 489220, 978440]

約数ペア:

[(1, 978440), (2, 489220), (4, 244610), (5, 195688), (8, 122305), (10, 97844), (20, 48922), (40, 24461), (61, 16040), (122, 8020), (244, 4010), (305, 3208), (401, 2440), (488, 2005), (610, 1604), (802, 1220)]