256003020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15629}}^1$

素因数の和:15664

約数の個数: 144

約数和(自身を含む): 955805760

約数和(自身を除く): 699802740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 15629, 16380, 31258, 46887, 62516, 78145, 93774, 109403, 140661, 156290, 187548, 203177, 218806, 234435, 281322, 312580, 328209, 406354, 437612, 468870, 547015, 562644, 609531, 656418, 703305, 812708, 937740, 984627, 1015885, 1094030, 1219062, 1312836, 1406610, 1422239, 1641045, 1828593, 1969254, 2031770, 2188060, 2438124, 2813220, 2844478, 3047655, 3282090, 3657186, 3938508, 4063540, 4266717, 4923135, 5688956, 6095310, 6564180, 7111195, 7314372, 8533434, 9142965, 9846270, 12190620, 12800151, 14222390, 17066868, 18285930, 19692540, 21333585, 25600302, 28444780, 36571860, 42667170, 51200604, 64000755, 85334340, 128001510, 256003020]

約数ペア:

[(1, 256003020), (2, 128001510), (3, 85334340), (4, 64000755), (5, 51200604), (6, 42667170), (7, 36571860), (9, 28444780), (10, 25600302), (12, 21333585), (13, 19692540), (14, 18285930), (15, 17066868), (18, 14222390), (20, 12800151), (21, 12190620), (26, 9846270), (28, 9142965), (30, 8533434), (35, 7314372), (36, 7111195), (39, 6564180), (42, 6095310), (45, 5688956), (52, 4923135), (60, 4266717), (63, 4063540), (65, 3938508), (70, 3657186), (78, 3282090), (84, 3047655), (90, 2844478), (91, 2813220), (105, 2438124), (117, 2188060), (126, 2031770), (130, 1969254), (140, 1828593), (156, 1641045), (180, 1422239), (182, 1406610), (195, 1312836), (210, 1219062), (234, 1094030), (252, 1015885), (260, 984627), (273, 937740), (315, 812708), (364, 703305), (390, 656418), (420, 609531), (455, 562644), (468, 547015), (546, 468870), (585, 437612), (630, 406354), (780, 328209), (819, 312580), (910, 281322), (1092, 234435), (1170, 218806), (1260, 203177), (1365, 187548), (1638, 156290), (1820, 140661), (2340, 109403), (2730, 93774), (3276, 78145), (4095, 62516), (5460, 46887), (8190, 31258), (15629, 16380)]