21806640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{977}}^1$

素因数の和:1027

約数の個数: 120

約数和(自身を含む): 75673728

約数和(自身を除く): 53867088

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 930, 977, 1116, 1240, 1395, 1488, 1860, 1954, 2232, 2480, 2790, 2931, 3720, 3908, 4464, 4885, 5580, 5862, 7440, 7816, 8793, 9770, 11160, 11724, 14655, 15632, 17586, 19540, 22320, 23448, 29310, 30287, 35172, 39080, 43965, 46896, 58620, 60574, 70344, 78160, 87930, 90861, 117240, 121148, 140688, 151435, 175860, 181722, 234480, 242296, 272583, 302870, 351720, 363444, 454305, 484592, 545166, 605740, 703440, 726888, 908610, 1090332, 1211480, 1362915, 1453776, 1817220, 2180664, 2422960, 2725830, 3634440, 4361328, 5451660, 7268880, 10903320, 21806640]

約数ペア:

[(1, 21806640), (2, 10903320), (3, 7268880), (4, 5451660), (5, 4361328), (6, 3634440), (8, 2725830), (9, 2422960), (10, 2180664), (12, 1817220), (15, 1453776), (16, 1362915), (18, 1211480), (20, 1090332), (24, 908610), (30, 726888), (31, 703440), (36, 605740), (40, 545166), (45, 484592), (48, 454305), (60, 363444), (62, 351720), (72, 302870), (80, 272583), (90, 242296), (93, 234480), (120, 181722), (124, 175860), (144, 151435), (155, 140688), (180, 121148), (186, 117240), (240, 90861), (248, 87930), (279, 78160), (310, 70344), (360, 60574), (372, 58620), (465, 46896), (496, 43965), (558, 39080), (620, 35172), (720, 30287), (744, 29310), (930, 23448), (977, 22320), (1116, 19540), (1240, 17586), (1395, 15632), (1488, 14655), (1860, 11724), (1954, 11160), (2232, 9770), (2480, 8793), (2790, 7816), (2931, 7440), (3720, 5862), (3908, 5580), (4464, 4885)]