21460460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 55738368

約数和(自身を除く): 34277908

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 71, 85, 119, 127, 140, 142, 170, 238, 254, 284, 340, 355, 476, 497, 508, 595, 635, 710, 889, 994, 1190, 1207, 1270, 1420, 1778, 1988, 2159, 2380, 2414, 2485, 2540, 3556, 4318, 4445, 4828, 4970, 6035, 8449, 8636, 8890, 9017, 9940, 10795, 12070, 15113, 16898, 17780, 18034, 21590, 24140, 30226, 33796, 36068, 42245, 43180, 45085, 60452, 63119, 75565, 84490, 90170, 126238, 151130, 153289, 168980, 180340, 252476, 302260, 306578, 315595, 613156, 631190, 766445, 1073023, 1262380, 1532890, 2146046, 3065780, 4292092, 5365115, 10730230, 21460460]

約数ペア:

[(1, 21460460), (2, 10730230), (4, 5365115), (5, 4292092), (7, 3065780), (10, 2146046), (14, 1532890), (17, 1262380), (20, 1073023), (28, 766445), (34, 631190), (35, 613156), (68, 315595), (70, 306578), (71, 302260), (85, 252476), (119, 180340), (127, 168980), (140, 153289), (142, 151130), (170, 126238), (238, 90170), (254, 84490), (284, 75565), (340, 63119), (355, 60452), (476, 45085), (497, 43180), (508, 42245), (595, 36068), (635, 33796), (710, 30226), (889, 24140), (994, 21590), (1190, 18034), (1207, 17780), (1270, 16898), (1420, 15113), (1778, 12070), (1988, 10795), (2159, 9940), (2380, 9017), (2414, 8890), (2485, 8636), (2540, 8449), (3556, 6035), (4318, 4970), (4445, 4828)]