21700380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:715

約数の個数: 96

約数和(自身を含む): 67060224

約数和(自身を除く): 45359844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 559, 645, 647, 780, 860, 1118, 1290, 1294, 1677, 1941, 2236, 2580, 2588, 2795, 3235, 3354, 3882, 5590, 6470, 6708, 7764, 8385, 8411, 9705, 11180, 12940, 16770, 16822, 19410, 25233, 27821, 33540, 33644, 38820, 42055, 50466, 55642, 83463, 84110, 100932, 111284, 126165, 139105, 166926, 168220, 252330, 278210, 333852, 361673, 417315, 504660, 556420, 723346, 834630, 1085019, 1446692, 1669260, 1808365, 2170038, 3616730, 4340076, 5425095, 7233460, 10850190, 21700380]

約数ペア:

[(1, 21700380), (2, 10850190), (3, 7233460), (4, 5425095), (5, 4340076), (6, 3616730), (10, 2170038), (12, 1808365), (13, 1669260), (15, 1446692), (20, 1085019), (26, 834630), (30, 723346), (39, 556420), (43, 504660), (52, 417315), (60, 361673), (65, 333852), (78, 278210), (86, 252330), (129, 168220), (130, 166926), (156, 139105), (172, 126165), (195, 111284), (215, 100932), (258, 84110), (260, 83463), (390, 55642), (430, 50466), (516, 42055), (559, 38820), (645, 33644), (647, 33540), (780, 27821), (860, 25233), (1118, 19410), (1290, 16822), (1294, 16770), (1677, 12940), (1941, 11180), (2236, 9705), (2580, 8411), (2588, 8385), (2795, 7764), (3235, 6708), (3354, 6470), (3882, 5590)]