128906820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{389}}^1$

素因数の和:674

約数の個数: 144

約数和(自身を含む): 449729280

約数和(自身を除く): 320822460

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 263, 315, 389, 420, 526, 630, 778, 789, 1052, 1167, 1260, 1315, 1556, 1578, 1841, 1945, 2334, 2367, 2630, 2723, 3156, 3501, 3682, 3890, 3945, 4668, 4734, 5260, 5446, 5523, 5835, 7002, 7364, 7780, 7890, 8169, 9205, 9468, 10892, 11046, 11670, 11835, 13615, 14004, 15780, 16338, 16569, 17505, 18410, 22092, 23340, 23670, 24507, 27230, 27615, 32676, 33138, 35010, 36820, 40845, 47340, 49014, 54460, 55230, 66276, 70020, 81690, 82845, 98028, 102307, 110460, 122535, 163380, 165690, 204614, 245070, 306921, 331380, 409228, 490140, 511535, 613842, 716149, 920763, 1023070, 1227684, 1432298, 1534605, 1841526, 2046140, 2148447, 2864596, 3069210, 3580745, 3683052, 4296894, 4603815, 6138420, 6445341, 7161490, 8593788, 9207630, 10742235, 12890682, 14322980, 18415260, 21484470, 25781364, 32226705, 42968940, 64453410, 128906820]

約数ペア:

[(1, 128906820), (2, 64453410), (3, 42968940), (4, 32226705), (5, 25781364), (6, 21484470), (7, 18415260), (9, 14322980), (10, 12890682), (12, 10742235), (14, 9207630), (15, 8593788), (18, 7161490), (20, 6445341), (21, 6138420), (28, 4603815), (30, 4296894), (35, 3683052), (36, 3580745), (42, 3069210), (45, 2864596), (60, 2148447), (63, 2046140), (70, 1841526), (84, 1534605), (90, 1432298), (105, 1227684), (126, 1023070), (140, 920763), (180, 716149), (210, 613842), (252, 511535), (263, 490140), (315, 409228), (389, 331380), (420, 306921), (526, 245070), (630, 204614), (778, 165690), (789, 163380), (1052, 122535), (1167, 110460), (1260, 102307), (1315, 98028), (1556, 82845), (1578, 81690), (1841, 70020), (1945, 66276), (2334, 55230), (2367, 54460), (2630, 49014), (2723, 47340), (3156, 40845), (3501, 36820), (3682, 35010), (3890, 33138), (3945, 32676), (4668, 27615), (4734, 27230), (5260, 24507), (5446, 23670), (5523, 23340), (5835, 22092), (7002, 18410), (7364, 17505), (7780, 16569), (7890, 16338), (8169, 15780), (9205, 14004), (9468, 13615), (10892, 11835), (11046, 11670)]