20994688

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:106

約数の個数: 128

約数和(自身を含む): 52093440

約数和(自身を除く): 31098752

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 31, 32, 37, 44, 52, 62, 64, 74, 88, 104, 124, 128, 143, 148, 176, 208, 248, 286, 296, 341, 352, 403, 407, 416, 481, 496, 572, 592, 682, 704, 806, 814, 832, 962, 992, 1144, 1147, 1184, 1364, 1408, 1612, 1628, 1664, 1924, 1984, 2288, 2294, 2368, 2728, 3224, 3256, 3848, 3968, 4433, 4576, 4588, 4736, 5291, 5456, 6448, 6512, 7696, 8866, 9152, 9176, 10582, 10912, 12617, 12896, 13024, 14911, 15392, 17732, 18304, 18352, 21164, 21824, 25234, 25792, 26048, 29822, 30784, 35464, 36704, 42328, 43648, 50468, 51584, 52096, 59644, 61568, 70928, 73408, 84656, 100936, 119288, 141856, 146816, 164021, 169312, 201872, 238576, 283712, 328042, 338624, 403744, 477152, 567424, 656084, 677248, 807488, 954304, 1312168, 1614976, 1908608, 2624336, 5248672, 10497344, 20994688]

約数ペア:

[(1, 20994688), (2, 10497344), (4, 5248672), (8, 2624336), (11, 1908608), (13, 1614976), (16, 1312168), (22, 954304), (26, 807488), (31, 677248), (32, 656084), (37, 567424), (44, 477152), (52, 403744), (62, 338624), (64, 328042), (74, 283712), (88, 238576), (104, 201872), (124, 169312), (128, 164021), (143, 146816), (148, 141856), (176, 119288), (208, 100936), (248, 84656), (286, 73408), (296, 70928), (341, 61568), (352, 59644), (403, 52096), (407, 51584), (416, 50468), (481, 43648), (496, 42328), (572, 36704), (592, 35464), (682, 30784), (704, 29822), (806, 26048), (814, 25792), (832, 25234), (962, 21824), (992, 21164), (1144, 18352), (1147, 18304), (1184, 17732), (1364, 15392), (1408, 14911), (1612, 13024), (1628, 12896), (1664, 12617), (1924, 10912), (1984, 10582), (2288, 9176), (2294, 9152), (2368, 8866), (2728, 7696), (3224, 6512), (3256, 6448), (3848, 5456), (3968, 5291), (4433, 4736), (4576, 4588)]