21128758040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{77101}}^1$

素因数の和:77173

約数の個数: 128

約数和(自身を含む): 55957547520

約数和(自身を除く): 34828789480

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 31, 34, 40, 52, 62, 65, 68, 85, 104, 124, 130, 136, 155, 170, 221, 248, 260, 310, 340, 403, 442, 520, 527, 620, 680, 806, 884, 1054, 1105, 1240, 1612, 1768, 2015, 2108, 2210, 2635, 3224, 4030, 4216, 4420, 5270, 6851, 8060, 8840, 10540, 13702, 16120, 21080, 27404, 34255, 54808, 68510, 77101, 137020, 154202, 274040, 308404, 385505, 616808, 771010, 1002313, 1310717, 1542020, 2004626, 2390131, 2621434, 3084040, 4009252, 4780262, 5011565, 5242868, 6553585, 8018504, 9560524, 10023130, 10485736, 11950655, 13107170, 17039321, 19121048, 20046260, 23901310, 26214340, 31071703, 34078642, 40092520, 40632227, 47802620, 52428680, 62143406, 68157284, 81264454, 85196605, 95605240, 124286812, 136314568, 155358515, 162528908, 170393210, 203161135, 248573624, 310717030, 325057816, 340786420, 406322270, 528218951, 621434060, 681572840, 812644540, 1056437902, 1242868120, 1625289080, 2112875804, 2641094755, 4225751608, 5282189510, 10564379020, 21128758040]

約数ペア:

[(1, 21128758040), (2, 10564379020), (4, 5282189510), (5, 4225751608), (8, 2641094755), (10, 2112875804), (13, 1625289080), (17, 1242868120), (20, 1056437902), (26, 812644540), (31, 681572840), (34, 621434060), (40, 528218951), (52, 406322270), (62, 340786420), (65, 325057816), (68, 310717030), (85, 248573624), (104, 203161135), (124, 170393210), (130, 162528908), (136, 155358515), (155, 136314568), (170, 124286812), (221, 95605240), (248, 85196605), (260, 81264454), (310, 68157284), (340, 62143406), (403, 52428680), (442, 47802620), (520, 40632227), (527, 40092520), (620, 34078642), (680, 31071703), (806, 26214340), (884, 23901310), (1054, 20046260), (1105, 19121048), (1240, 17039321), (1612, 13107170), (1768, 11950655), (2015, 10485736), (2108, 10023130), (2210, 9560524), (2635, 8018504), (3224, 6553585), (4030, 5242868), (4216, 5011565), (4420, 4780262), (5270, 4009252), (6851, 3084040), (8060, 2621434), (8840, 2390131), (10540, 2004626), (13702, 1542020), (16120, 1310717), (21080, 1002313), (27404, 771010), (34255, 616808), (54808, 385505), (68510, 308404), (77101, 274040), (137020, 154202)]