87889340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:328

約数の個数: 144

約数和(自身を含む): 242694144

約数和(自身を除く): 154804804

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 49, 55, 62, 70, 77, 98, 110, 124, 140, 154, 155, 196, 217, 220, 245, 263, 308, 310, 341, 385, 434, 490, 526, 539, 620, 682, 770, 868, 980, 1052, 1078, 1085, 1315, 1364, 1519, 1540, 1705, 1841, 2156, 2170, 2387, 2630, 2695, 2893, 3038, 3410, 3682, 4340, 4774, 5260, 5390, 5786, 6076, 6820, 7364, 7595, 8153, 9205, 9548, 10780, 11572, 11935, 12887, 14465, 15190, 16306, 16709, 18410, 20251, 23870, 25774, 28930, 30380, 32612, 33418, 36820, 40502, 40765, 47740, 51548, 57071, 57860, 64435, 66836, 81004, 81530, 83545, 89683, 101255, 114142, 128870, 141757, 163060, 167090, 179366, 202510, 228284, 257740, 283514, 285355, 334180, 358732, 399497, 405020, 448415, 567028, 570710, 627781, 708785, 798994, 896830, 1141420, 1255562, 1417570, 1597988, 1793660, 1997485, 2511124, 2835140, 3138905, 3994970, 4394467, 6277810, 7989940, 8788934, 12555620, 17577868, 21972335, 43944670, 87889340]

約数ペア:

[(1, 87889340), (2, 43944670), (4, 21972335), (5, 17577868), (7, 12555620), (10, 8788934), (11, 7989940), (14, 6277810), (20, 4394467), (22, 3994970), (28, 3138905), (31, 2835140), (35, 2511124), (44, 1997485), (49, 1793660), (55, 1597988), (62, 1417570), (70, 1255562), (77, 1141420), (98, 896830), (110, 798994), (124, 708785), (140, 627781), (154, 570710), (155, 567028), (196, 448415), (217, 405020), (220, 399497), (245, 358732), (263, 334180), (308, 285355), (310, 283514), (341, 257740), (385, 228284), (434, 202510), (490, 179366), (526, 167090), (539, 163060), (620, 141757), (682, 128870), (770, 114142), (868, 101255), (980, 89683), (1052, 83545), (1078, 81530), (1085, 81004), (1315, 66836), (1364, 64435), (1519, 57860), (1540, 57071), (1705, 51548), (1841, 47740), (2156, 40765), (2170, 40502), (2387, 36820), (2630, 33418), (2695, 32612), (2893, 30380), (3038, 28930), (3410, 25774), (3682, 23870), (4340, 20251), (4774, 18410), (5260, 16709), (5390, 16306), (5786, 15190), (6076, 14465), (6820, 12887), (7364, 11935), (7595, 11572), (8153, 10780), (9205, 9548)]