21438450

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:161

約数の個数: 144

約数和(自身を含む): 64763712

約数和(自身を除く): 43325262

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 25, 30, 33, 45, 50, 55, 61, 66, 71, 75, 90, 99, 110, 122, 142, 150, 165, 183, 198, 213, 225, 275, 305, 330, 355, 366, 426, 450, 495, 549, 550, 610, 639, 671, 710, 781, 825, 915, 990, 1065, 1098, 1278, 1342, 1525, 1562, 1650, 1775, 1830, 2013, 2130, 2343, 2475, 2745, 3050, 3195, 3355, 3550, 3905, 4026, 4331, 4575, 4686, 4950, 5325, 5490, 6039, 6390, 6710, 7029, 7810, 8662, 9150, 10065, 10650, 11715, 12078, 12993, 13725, 14058, 15975, 16775, 19525, 20130, 21655, 23430, 25986, 27450, 30195, 31950, 33550, 35145, 38979, 39050, 43310, 47641, 50325, 58575, 60390, 64965, 70290, 77958, 95282, 100650, 108275, 117150, 129930, 142923, 150975, 175725, 194895, 216550, 238205, 285846, 301950, 324825, 351450, 389790, 428769, 476410, 649650, 714615, 857538, 974475, 1191025, 1429230, 1948950, 2143845, 2382050, 3573075, 4287690, 7146150, 10719225, 21438450]

約数ペア:

[(1, 21438450), (2, 10719225), (3, 7146150), (5, 4287690), (6, 3573075), (9, 2382050), (10, 2143845), (11, 1948950), (15, 1429230), (18, 1191025), (22, 974475), (25, 857538), (30, 714615), (33, 649650), (45, 476410), (50, 428769), (55, 389790), (61, 351450), (66, 324825), (71, 301950), (75, 285846), (90, 238205), (99, 216550), (110, 194895), (122, 175725), (142, 150975), (150, 142923), (165, 129930), (183, 117150), (198, 108275), (213, 100650), (225, 95282), (275, 77958), (305, 70290), (330, 64965), (355, 60390), (366, 58575), (426, 50325), (450, 47641), (495, 43310), (549, 39050), (550, 38979), (610, 35145), (639, 33550), (671, 31950), (710, 30195), (781, 27450), (825, 25986), (915, 23430), (990, 21655), (1065, 20130), (1098, 19525), (1278, 16775), (1342, 15975), (1525, 14058), (1562, 13725), (1650, 12993), (1775, 12078), (1830, 11715), (2013, 10650), (2130, 10065), (2343, 9150), (2475, 8662), (2745, 7810), (3050, 7029), (3195, 6710), (3355, 6390), (3550, 6039), (3905, 5490), (4026, 5325), (4331, 4950), (4575, 4686)]