21720152340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{659}}^1\times {\mathrm{10771}}^1$

素因数の和:11462

約数の個数: 144

約数和(自身を含む): 69872362560

約数和(自身を除く): 48152210220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 659, 765, 1020, 1318, 1530, 1977, 2636, 3060, 3295, 3954, 5931, 6590, 7908, 9885, 10771, 11203, 11862, 13180, 19770, 21542, 22406, 23724, 29655, 32313, 33609, 39540, 43084, 44812, 53855, 56015, 59310, 64626, 67218, 96939, 100827, 107710, 112030, 118620, 129252, 134436, 161565, 168045, 183107, 193878, 201654, 215420, 224060, 323130, 336090, 366214, 387756, 403308, 484695, 504135, 549321, 646260, 672180, 732428, 915535, 969390, 1008270, 1098642, 1647963, 1831070, 1938780, 2016540, 2197284, 2746605, 3295926, 3662140, 5493210, 6591852, 7098089, 8239815, 10986420, 14196178, 16479630, 21294267, 28392356, 32959260, 35490445, 42588534, 63882801, 70980890, 85177068, 106471335, 120667513, 127765602, 141961780, 212942670, 241335026, 255531204, 319414005, 362002539, 425885340, 482670052, 603337565, 638828010, 724005078, 1086007617, 1206675130, 1277656020, 1448010156, 1810012695, 2172015234, 2413350260, 3620025390, 4344030468, 5430038085, 7240050780, 10860076170, 21720152340]

約数ペア:

[(1, 21720152340), (2, 10860076170), (3, 7240050780), (4, 5430038085), (5, 4344030468), (6, 3620025390), (9, 2413350260), (10, 2172015234), (12, 1810012695), (15, 1448010156), (17, 1277656020), (18, 1206675130), (20, 1086007617), (30, 724005078), (34, 638828010), (36, 603337565), (45, 482670052), (51, 425885340), (60, 362002539), (68, 319414005), (85, 255531204), (90, 241335026), (102, 212942670), (153, 141961780), (170, 127765602), (180, 120667513), (204, 106471335), (255, 85177068), (306, 70980890), (340, 63882801), (510, 42588534), (612, 35490445), (659, 32959260), (765, 28392356), (1020, 21294267), (1318, 16479630), (1530, 14196178), (1977, 10986420), (2636, 8239815), (3060, 7098089), (3295, 6591852), (3954, 5493210), (5931, 3662140), (6590, 3295926), (7908, 2746605), (9885, 2197284), (10771, 2016540), (11203, 1938780), (11862, 1831070), (13180, 1647963), (19770, 1098642), (21542, 1008270), (22406, 969390), (23724, 915535), (29655, 732428), (32313, 672180), (33609, 646260), (39540, 549321), (43084, 504135), (44812, 484695), (53855, 403308), (56015, 387756), (59310, 366214), (64626, 336090), (67218, 323130), (96939, 224060), (100827, 215420), (107710, 201654), (112030, 193878), (118620, 183107), (129252, 168045), (134436, 161565)]