28006020

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:295

約数の個数: 192

約数和(自身を含む): 103219200

約数和(自身を除く): 75213180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 54, 60, 62, 63, 70, 84, 90, 93, 105, 108, 124, 126, 135, 140, 155, 180, 186, 189, 210, 217, 239, 252, 270, 279, 310, 315, 372, 378, 420, 434, 465, 478, 540, 558, 620, 630, 651, 717, 756, 837, 868, 930, 945, 956, 1085, 1116, 1195, 1260, 1302, 1395, 1434, 1673, 1674, 1860, 1890, 1953, 2151, 2170, 2390, 2604, 2790, 2868, 3255, 3346, 3348, 3585, 3780, 3906, 4185, 4302, 4340, 4780, 5019, 5580, 5859, 6453, 6510, 6692, 7170, 7409, 7812, 8365, 8370, 8604, 9765, 10038, 10755, 11718, 12906, 13020, 14340, 14818, 15057, 16730, 16740, 19530, 20076, 21510, 22227, 23436, 25095, 25812, 29295, 29636, 30114, 32265, 33460, 37045, 39060, 43020, 44454, 45171, 50190, 51863, 58590, 60228, 64530, 66681, 74090, 75285, 88908, 90342, 100380, 103726, 111135, 117180, 129060, 133362, 148180, 150570, 155589, 180684, 200043, 207452, 222270, 225855, 259315, 266724, 301140, 311178, 333405, 400086, 444540, 451710, 466767, 518630, 622356, 666810, 777945, 800172, 903420, 933534, 1000215, 1037260, 1333620, 1400301, 1555890, 1867068, 2000430, 2333835, 2800602, 3111780, 4000860, 4667670, 5601204, 7001505, 9335340, 14003010, 28006020]

約数ペア:

[(1, 28006020), (2, 14003010), (3, 9335340), (4, 7001505), (5, 5601204), (6, 4667670), (7, 4000860), (9, 3111780), (10, 2800602), (12, 2333835), (14, 2000430), (15, 1867068), (18, 1555890), (20, 1400301), (21, 1333620), (27, 1037260), (28, 1000215), (30, 933534), (31, 903420), (35, 800172), (36, 777945), (42, 666810), (45, 622356), (54, 518630), (60, 466767), (62, 451710), (63, 444540), (70, 400086), (84, 333405), (90, 311178), (93, 301140), (105, 266724), (108, 259315), (124, 225855), (126, 222270), (135, 207452), (140, 200043), (155, 180684), (180, 155589), (186, 150570), (189, 148180), (210, 133362), (217, 129060), (239, 117180), (252, 111135), (270, 103726), (279, 100380), (310, 90342), (315, 88908), (372, 75285), (378, 74090), (420, 66681), (434, 64530), (465, 60228), (478, 58590), (540, 51863), (558, 50190), (620, 45171), (630, 44454), (651, 43020), (717, 39060), (756, 37045), (837, 33460), (868, 32265), (930, 30114), (945, 29636), (956, 29295), (1085, 25812), (1116, 25095), (1195, 23436), (1260, 22227), (1302, 21510), (1395, 20076), (1434, 19530), (1673, 16740), (1674, 16730), (1860, 15057), (1890, 14818), (1953, 14340), (2151, 13020), (2170, 12906), (2390, 11718), (2604, 10755), (2790, 10038), (2868, 9765), (3255, 8604), (3346, 8370), (3348, 8365), (3585, 7812), (3780, 7409), (3906, 7170), (4185, 6692), (4302, 6510), (4340, 6453), (4780, 5859), (5019, 5580)]