81109720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{659}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 194594400

約数和(自身を除く): 113484680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 181, 340, 362, 659, 680, 724, 905, 1318, 1448, 1810, 2636, 3077, 3295, 3620, 5272, 6154, 6590, 7240, 11203, 12308, 13180, 15385, 22406, 24616, 26360, 30770, 44812, 56015, 61540, 89624, 112030, 119279, 123080, 224060, 238558, 448120, 477116, 596395, 954232, 1192790, 2027743, 2385580, 4055486, 4771160, 8110972, 10138715, 16221944, 20277430, 40554860, 81109720]

約数ペア:

[(1, 81109720), (2, 40554860), (4, 20277430), (5, 16221944), (8, 10138715), (10, 8110972), (17, 4771160), (20, 4055486), (34, 2385580), (40, 2027743), (68, 1192790), (85, 954232), (136, 596395), (170, 477116), (181, 448120), (340, 238558), (362, 224060), (659, 123080), (680, 119279), (724, 112030), (905, 89624), (1318, 61540), (1448, 56015), (1810, 44812), (2636, 30770), (3077, 26360), (3295, 24616), (3620, 22406), (5272, 15385), (6154, 13180), (6590, 12308), (7240, 11203)]