7278520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 17632800

約数和(自身を除く): 10354280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 157, 190, 244, 305, 314, 380, 488, 610, 628, 760, 785, 1159, 1220, 1256, 1570, 2318, 2440, 2983, 3140, 4636, 5795, 5966, 6280, 9272, 9577, 11590, 11932, 14915, 19154, 23180, 23864, 29830, 38308, 46360, 47885, 59660, 76616, 95770, 119320, 181963, 191540, 363926, 383080, 727852, 909815, 1455704, 1819630, 3639260, 7278520]

約数ペア:

[(1, 7278520), (2, 3639260), (4, 1819630), (5, 1455704), (8, 909815), (10, 727852), (19, 383080), (20, 363926), (38, 191540), (40, 181963), (61, 119320), (76, 95770), (95, 76616), (122, 59660), (152, 47885), (157, 46360), (190, 38308), (244, 29830), (305, 23864), (314, 23180), (380, 19154), (488, 14915), (610, 11932), (628, 11590), (760, 9577), (785, 9272), (1159, 6280), (1220, 5966), (1256, 5795), (1570, 4636), (2318, 3140), (2440, 2983)]