197721720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2531}}^1$

素因数の和:2586

約数の個数: 192

約数和(自身を含む): 758384640

約数和(自身を除く): 560662920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 31, 35, 36, 40, 42, 45, 56, 60, 62, 63, 70, 72, 84, 90, 93, 105, 120, 124, 126, 140, 155, 168, 180, 186, 210, 217, 248, 252, 279, 280, 310, 315, 360, 372, 420, 434, 465, 504, 558, 620, 630, 651, 744, 840, 868, 930, 1085, 1116, 1240, 1260, 1302, 1395, 1736, 1860, 1953, 2170, 2232, 2520, 2531, 2604, 2790, 3255, 3720, 3906, 4340, 5062, 5208, 5580, 6510, 7593, 7812, 8680, 9765, 10124, 11160, 12655, 13020, 15186, 15624, 17717, 19530, 20248, 22779, 25310, 26040, 30372, 35434, 37965, 39060, 45558, 50620, 53151, 60744, 70868, 75930, 78120, 78461, 88585, 91116, 101240, 106302, 113895, 141736, 151860, 156922, 159453, 177170, 182232, 212604, 227790, 235383, 265755, 303720, 313844, 318906, 354340, 392305, 425208, 455580, 470766, 531510, 549227, 627688, 637812, 706149, 708680, 784610, 797265, 911160, 941532, 1063020, 1098454, 1176915, 1275624, 1412298, 1569220, 1594530, 1647681, 1883064, 2126040, 2196908, 2353830, 2746135, 2824596, 3138440, 3189060, 3295362, 3530745, 4393816, 4707660, 4943043, 5492270, 5649192, 6378120, 6590724, 7061490, 8238405, 9415320, 9886086, 10984540, 13181448, 14122980, 16476810, 19772172, 21969080, 24715215, 28245960, 32953620, 39544344, 49430430, 65907240, 98860860, 197721720]

約数ペア:

[(1, 197721720), (2, 98860860), (3, 65907240), (4, 49430430), (5, 39544344), (6, 32953620), (7, 28245960), (8, 24715215), (9, 21969080), (10, 19772172), (12, 16476810), (14, 14122980), (15, 13181448), (18, 10984540), (20, 9886086), (21, 9415320), (24, 8238405), (28, 7061490), (30, 6590724), (31, 6378120), (35, 5649192), (36, 5492270), (40, 4943043), (42, 4707660), (45, 4393816), (56, 3530745), (60, 3295362), (62, 3189060), (63, 3138440), (70, 2824596), (72, 2746135), (84, 2353830), (90, 2196908), (93, 2126040), (105, 1883064), (120, 1647681), (124, 1594530), (126, 1569220), (140, 1412298), (155, 1275624), (168, 1176915), (180, 1098454), (186, 1063020), (210, 941532), (217, 911160), (248, 797265), (252, 784610), (279, 708680), (280, 706149), (310, 637812), (315, 627688), (360, 549227), (372, 531510), (420, 470766), (434, 455580), (465, 425208), (504, 392305), (558, 354340), (620, 318906), (630, 313844), (651, 303720), (744, 265755), (840, 235383), (868, 227790), (930, 212604), (1085, 182232), (1116, 177170), (1240, 159453), (1260, 156922), (1302, 151860), (1395, 141736), (1736, 113895), (1860, 106302), (1953, 101240), (2170, 91116), (2232, 88585), (2520, 78461), (2531, 78120), (2604, 75930), (2790, 70868), (3255, 60744), (3720, 53151), (3906, 50620), (4340, 45558), (5062, 39060), (5208, 37965), (5580, 35434), (6510, 30372), (7593, 26040), (7812, 25310), (8680, 22779), (9765, 20248), (10124, 19530), (11160, 17717), (12655, 15624), (13020, 15186)]