21673820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 55738368

約数和(自身を除く): 34064548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 53, 70, 92, 106, 115, 127, 140, 161, 212, 230, 254, 265, 322, 371, 460, 508, 530, 635, 644, 742, 805, 889, 1060, 1219, 1270, 1484, 1610, 1778, 1855, 2438, 2540, 2921, 3220, 3556, 3710, 4445, 4876, 5842, 6095, 6731, 7420, 8533, 8890, 11684, 12190, 13462, 14605, 17066, 17780, 20447, 24380, 26924, 29210, 33655, 34132, 40894, 42665, 47117, 58420, 67310, 81788, 85330, 94234, 102235, 134620, 154813, 170660, 188468, 204470, 235585, 309626, 408940, 471170, 619252, 774065, 942340, 1083691, 1548130, 2167382, 3096260, 4334764, 5418455, 10836910, 21673820]

約数ペア:

[(1, 21673820), (2, 10836910), (4, 5418455), (5, 4334764), (7, 3096260), (10, 2167382), (14, 1548130), (20, 1083691), (23, 942340), (28, 774065), (35, 619252), (46, 471170), (53, 408940), (70, 309626), (92, 235585), (106, 204470), (115, 188468), (127, 170660), (140, 154813), (161, 134620), (212, 102235), (230, 94234), (254, 85330), (265, 81788), (322, 67310), (371, 58420), (460, 47117), (508, 42665), (530, 40894), (635, 34132), (644, 33655), (742, 29210), (805, 26924), (889, 24380), (1060, 20447), (1219, 17780), (1270, 17066), (1484, 14605), (1610, 13462), (1778, 12190), (1855, 11684), (2438, 8890), (2540, 8533), (2921, 7420), (3220, 6731), (3556, 6095), (3710, 5842), (4445, 4876)]