21347340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 71360352

約数和(自身を除く): 50013012

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 53, 60, 70, 84, 98, 105, 106, 137, 140, 147, 159, 196, 210, 212, 245, 265, 274, 294, 318, 371, 411, 420, 490, 530, 548, 588, 636, 685, 735, 742, 795, 822, 959, 980, 1060, 1113, 1370, 1470, 1484, 1590, 1644, 1855, 1918, 2055, 2226, 2597, 2740, 2877, 2940, 3180, 3710, 3836, 4110, 4452, 4795, 5194, 5565, 5754, 6713, 7261, 7420, 7791, 8220, 9590, 10388, 11130, 11508, 12985, 13426, 14385, 14522, 15582, 19180, 20139, 21783, 22260, 25970, 26852, 28770, 29044, 31164, 33565, 36305, 38955, 40278, 43566, 50827, 51940, 57540, 67130, 72610, 77910, 80556, 87132, 100695, 101654, 108915, 134260, 145220, 152481, 155820, 201390, 203308, 217830, 254135, 304962, 355789, 402780, 435660, 508270, 609924, 711578, 762405, 1016540, 1067367, 1423156, 1524810, 1778945, 2134734, 3049620, 3557890, 4269468, 5336835, 7115780, 10673670, 21347340]

約数ペア:

[(1, 21347340), (2, 10673670), (3, 7115780), (4, 5336835), (5, 4269468), (6, 3557890), (7, 3049620), (10, 2134734), (12, 1778945), (14, 1524810), (15, 1423156), (20, 1067367), (21, 1016540), (28, 762405), (30, 711578), (35, 609924), (42, 508270), (49, 435660), (53, 402780), (60, 355789), (70, 304962), (84, 254135), (98, 217830), (105, 203308), (106, 201390), (137, 155820), (140, 152481), (147, 145220), (159, 134260), (196, 108915), (210, 101654), (212, 100695), (245, 87132), (265, 80556), (274, 77910), (294, 72610), (318, 67130), (371, 57540), (411, 51940), (420, 50827), (490, 43566), (530, 40278), (548, 38955), (588, 36305), (636, 33565), (685, 31164), (735, 29044), (742, 28770), (795, 26852), (822, 25970), (959, 22260), (980, 21783), (1060, 20139), (1113, 19180), (1370, 15582), (1470, 14522), (1484, 14385), (1590, 13426), (1644, 12985), (1855, 11508), (1918, 11130), (2055, 10388), (2226, 9590), (2597, 8220), (2740, 7791), (2877, 7420), (2940, 7261), (3180, 6713), (3710, 5754), (3836, 5565), (4110, 5194), (4452, 4795)]