2018521720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1\times {\mathrm{2063}}^1$

素因数の和:2536

約数の個数: 64

約数和(自身を含む): 4629882240

約数和(自身を除く): 2611360520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 401, 488, 610, 802, 1220, 1604, 2005, 2063, 2440, 3208, 4010, 4126, 8020, 8252, 10315, 16040, 16504, 20630, 24461, 41260, 48922, 82520, 97844, 122305, 125843, 195688, 244610, 251686, 489220, 503372, 629215, 827263, 978440, 1006744, 1258430, 1654526, 2516860, 3309052, 4136315, 5033720, 6618104, 8272630, 16545260, 33090520, 50463043, 100926086, 201852172, 252315215, 403704344, 504630430, 1009260860, 2018521720]

約数ペア:

[(1, 2018521720), (2, 1009260860), (4, 504630430), (5, 403704344), (8, 252315215), (10, 201852172), (20, 100926086), (40, 50463043), (61, 33090520), (122, 16545260), (244, 8272630), (305, 6618104), (401, 5033720), (488, 4136315), (610, 3309052), (802, 2516860), (1220, 1654526), (1604, 1258430), (2005, 1006744), (2063, 978440), (2440, 827263), (3208, 629215), (4010, 503372), (4126, 489220), (8020, 251686), (8252, 244610), (10315, 195688), (16040, 125843), (16504, 122305), (20630, 97844), (24461, 82520), (41260, 48922)]