31831380

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{401}}^1$

素因数の和:436

約数の個数: 180

約数和(自身を含む): 116448948

約数和(自身を除く): 84617568

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 378, 401, 405, 420, 441, 490, 540, 567, 588, 630, 735, 756, 802, 810, 882, 945, 980, 1134, 1203, 1260, 1323, 1470, 1604, 1620, 1764, 1890, 2005, 2205, 2268, 2406, 2646, 2807, 2835, 2940, 3609, 3780, 3969, 4010, 4410, 4812, 5292, 5614, 5670, 6015, 6615, 7218, 7938, 8020, 8421, 8820, 10827, 11228, 11340, 12030, 13230, 14035, 14436, 15876, 16842, 18045, 19649, 19845, 21654, 24060, 25263, 26460, 28070, 32481, 33684, 36090, 39298, 39690, 42105, 43308, 50526, 54135, 56140, 58947, 64962, 72180, 75789, 78596, 79380, 84210, 98245, 101052, 108270, 117894, 126315, 129924, 151578, 162405, 168420, 176841, 196490, 216540, 227367, 235788, 252630, 294735, 303156, 324810, 353682, 378945, 392980, 454734, 505260, 530523, 589470, 649620, 707364, 757890, 884205, 909468, 1061046, 1136835, 1178940, 1515780, 1591569, 1768410, 2122092, 2273670, 2652615, 3183138, 3536820, 4547340, 5305230, 6366276, 7957845, 10610460, 15915690, 31831380]

約数ペア:

[(1, 31831380), (2, 15915690), (3, 10610460), (4, 7957845), (5, 6366276), (6, 5305230), (7, 4547340), (9, 3536820), (10, 3183138), (12, 2652615), (14, 2273670), (15, 2122092), (18, 1768410), (20, 1591569), (21, 1515780), (27, 1178940), (28, 1136835), (30, 1061046), (35, 909468), (36, 884205), (42, 757890), (45, 707364), (49, 649620), (54, 589470), (60, 530523), (63, 505260), (70, 454734), (81, 392980), (84, 378945), (90, 353682), (98, 324810), (105, 303156), (108, 294735), (126, 252630), (135, 235788), (140, 227367), (147, 216540), (162, 196490), (180, 176841), (189, 168420), (196, 162405), (210, 151578), (245, 129924), (252, 126315), (270, 117894), (294, 108270), (315, 101052), (324, 98245), (378, 84210), (401, 79380), (405, 78596), (420, 75789), (441, 72180), (490, 64962), (540, 58947), (567, 56140), (588, 54135), (630, 50526), (735, 43308), (756, 42105), (802, 39690), (810, 39298), (882, 36090), (945, 33684), (980, 32481), (1134, 28070), (1203, 26460), (1260, 25263), (1323, 24060), (1470, 21654), (1604, 19845), (1620, 19649), (1764, 18045), (1890, 16842), (2005, 15876), (2205, 14436), (2268, 14035), (2406, 13230), (2646, 12030), (2807, 11340), (2835, 11228), (2940, 10827), (3609, 8820), (3780, 8421), (3969, 8020), (4010, 7938), (4410, 7218), (4812, 6615), (5292, 6015), (5614, 5670)]