21153698820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1\times {\mathrm{1759}}^1$

素因数の和:2786

約数の個数: 144

約数和(自身を含む): 65176151040

約数和(自身を除く): 44022452220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 941, 1065, 1278, 1420, 1759, 1882, 2130, 2556, 2823, 3195, 3518, 3764, 4260, 4705, 5277, 5646, 6390, 7036, 8469, 8795, 9410, 10554, 11292, 12780, 14115, 15831, 16938, 17590, 18820, 21108, 26385, 28230, 31662, 33876, 35180, 42345, 52770, 56460, 63324, 66811, 79155, 84690, 105540, 124889, 133622, 158310, 169380, 200433, 249778, 267244, 316620, 334055, 374667, 400866, 499556, 601299, 624445, 668110, 749334, 801732, 1002165, 1124001, 1202598, 1248890, 1336220, 1498668, 1655219, 1873335, 2004330, 2248002, 2405196, 2497780, 3006495, 3310438, 3746670, 4008660, 4496004, 4965657, 5620005, 6012990, 6620876, 7493340, 8276095, 9931314, 11240010, 12025980, 14896971, 16552190, 19862628, 22480020, 24828285, 29793942, 33104380, 49656570, 59587884, 74484855, 99313140, 117520549, 148969710, 235041098, 297939420, 352561647, 470082196, 587602745, 705123294, 1057684941, 1175205490, 1410246588, 1762808235, 2115369882, 2350410980, 3525616470, 4230739764, 5288424705, 7051232940, 10576849410, 21153698820]

約数ペア:

[(1, 21153698820), (2, 10576849410), (3, 7051232940), (4, 5288424705), (5, 4230739764), (6, 3525616470), (9, 2350410980), (10, 2115369882), (12, 1762808235), (15, 1410246588), (18, 1175205490), (20, 1057684941), (30, 705123294), (36, 587602745), (45, 470082196), (60, 352561647), (71, 297939420), (90, 235041098), (142, 148969710), (180, 117520549), (213, 99313140), (284, 74484855), (355, 59587884), (426, 49656570), (639, 33104380), (710, 29793942), (852, 24828285), (941, 22480020), (1065, 19862628), (1278, 16552190), (1420, 14896971), (1759, 12025980), (1882, 11240010), (2130, 9931314), (2556, 8276095), (2823, 7493340), (3195, 6620876), (3518, 6012990), (3764, 5620005), (4260, 4965657), (4705, 4496004), (5277, 4008660), (5646, 3746670), (6390, 3310438), (7036, 3006495), (8469, 2497780), (8795, 2405196), (9410, 2248002), (10554, 2004330), (11292, 1873335), (12780, 1655219), (14115, 1498668), (15831, 1336220), (16938, 1248890), (17590, 1202598), (18820, 1124001), (21108, 1002165), (26385, 801732), (28230, 749334), (31662, 668110), (33876, 624445), (35180, 601299), (42345, 499556), (52770, 400866), (56460, 374667), (63324, 334055), (66811, 316620), (79155, 267244), (84690, 249778), (105540, 200433), (124889, 169380), (133622, 158310)]