18781970

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1409}}^1$

素因数の和:1490

約数の個数: 32

約数和(自身を含む): 35735040

約数和(自身を除く): 16953070

約数列:

[1, 2, 5, 10, 31, 43, 62, 86, 155, 215, 310, 430, 1333, 1409, 2666, 2818, 6665, 7045, 13330, 14090, 43679, 60587, 87358, 121174, 218395, 302935, 436790, 605870, 1878197, 3756394, 9390985, 18781970]

約数ペア:

[(1, 18781970), (2, 9390985), (5, 3756394), (10, 1878197), (31, 605870), (43, 436790), (62, 302935), (86, 218395), (155, 121174), (215, 87358), (310, 60587), (430, 43679), (1333, 14090), (1409, 13330), (2666, 7045), (2818, 6665)]