16561020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 55617408

約数和(自身を除く): 39056388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 43, 49, 60, 70, 84, 86, 98, 105, 129, 131, 140, 147, 172, 196, 210, 215, 245, 258, 262, 294, 301, 393, 420, 430, 490, 516, 524, 588, 602, 645, 655, 735, 786, 860, 903, 917, 980, 1204, 1290, 1310, 1470, 1505, 1572, 1806, 1834, 1965, 2107, 2580, 2620, 2751, 2940, 3010, 3612, 3668, 3930, 4214, 4515, 4585, 5502, 5633, 6020, 6321, 6419, 7860, 8428, 9030, 9170, 10535, 11004, 11266, 12642, 12838, 13755, 16899, 18060, 18340, 19257, 21070, 22532, 25284, 25676, 27510, 28165, 31605, 32095, 33798, 38514, 39431, 42140, 55020, 56330, 63210, 64190, 67596, 77028, 78862, 84495, 96285, 112660, 118293, 126420, 128380, 157724, 168990, 192570, 197155, 236586, 276017, 337980, 385140, 394310, 473172, 552034, 591465, 788620, 828051, 1104068, 1182930, 1380085, 1656102, 2365860, 2760170, 3312204, 4140255, 5520340, 8280510, 16561020]

約数ペア:

[(1, 16561020), (2, 8280510), (3, 5520340), (4, 4140255), (5, 3312204), (6, 2760170), (7, 2365860), (10, 1656102), (12, 1380085), (14, 1182930), (15, 1104068), (20, 828051), (21, 788620), (28, 591465), (30, 552034), (35, 473172), (42, 394310), (43, 385140), (49, 337980), (60, 276017), (70, 236586), (84, 197155), (86, 192570), (98, 168990), (105, 157724), (129, 128380), (131, 126420), (140, 118293), (147, 112660), (172, 96285), (196, 84495), (210, 78862), (215, 77028), (245, 67596), (258, 64190), (262, 63210), (294, 56330), (301, 55020), (393, 42140), (420, 39431), (430, 38514), (490, 33798), (516, 32095), (524, 31605), (588, 28165), (602, 27510), (645, 25676), (655, 25284), (735, 22532), (786, 21070), (860, 19257), (903, 18340), (917, 18060), (980, 16899), (1204, 13755), (1290, 12838), (1310, 12642), (1470, 11266), (1505, 11004), (1572, 10535), (1806, 9170), (1834, 9030), (1965, 8428), (2107, 7860), (2580, 6419), (2620, 6321), (2751, 6020), (2940, 5633), (3010, 5502), (3612, 4585), (3668, 4515), (3930, 4214)]