20923178.000000000

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{367}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 491129856

約数和(自身を除く): 343001316

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 367, 372, 420, 434, 465, 620, 651, 734, 868, 930, 961, 1085, 1101, 1302, 1468, 1835, 1860, 1922, 2170, 2202, 2569, 2604, 2883, 3255, 3670, 3844, 4340, 4404, 4805, 5138, 5505, 5766, 6510, 6727, 7340, 7707, 9610, 10276, 11010, 11377, 11532, 12845, 13020, 13454, 14415, 15414, 19220, 20181, 22020, 22754, 25690, 26908, 28830, 30828, 33635, 34131, 38535, 40362, 45508, 51380, 56885, 57660, 67270, 68262, 77070, 79639, 80724, 100905, 113770, 134540, 136524, 154140, 159278, 170655, 201810, 227540, 238917, 318556, 341310, 352687, 398195, 403620, 477834, 682620, 705374, 796390, 955668, 1058061, 1194585, 1410748, 1592780, 1763435, 2116122, 2389170, 2468809, 3526870, 4232244, 4778340, 4937618, 5290305, 7053740, 7406427, 9875236, 10580610, 12344045, 14812854, 21161220, 24688090, 29625708, 37032135, 49376180, 74064270, 148128540]

約数ペア:

[(1, 148128540), (2, 74064270), (3, 49376180), (4, 37032135), (5, 29625708), (6, 24688090), (7, 21161220), (10, 14812854), (12, 12344045), (14, 10580610), (15, 9875236), (20, 7406427), (21, 7053740), (28, 5290305), (30, 4937618), (31, 4778340), (35, 4232244), (42, 3526870), (60, 2468809), (62, 2389170), (70, 2116122), (84, 1763435), (93, 1592780), (105, 1410748), (124, 1194585), (140, 1058061), (155, 955668), (186, 796390), (210, 705374), (217, 682620), (310, 477834), (367, 403620), (372, 398195), (420, 352687), (434, 341310), (465, 318556), (620, 238917), (651, 227540), (734, 201810), (868, 170655), (930, 159278), (961, 154140), (1085, 136524), (1101, 134540), (1302, 113770), (1468, 100905), (1835, 80724), (1860, 79639), (1922, 77070), (2170, 68262), (2202, 67270), (2569, 57660), (2604, 56885), (2883, 51380), (3255, 45508), (3670, 40362), (3844, 38535), (4340, 34131), (4404, 33635), (4805, 30828), (5138, 28830), (5505, 26908), (5766, 25690), (6510, 22754), (6727, 22020), (7340, 20181), (7707, 19220), (9610, 15414), (10276, 14415), (11010, 13454), (11377, 13020), (11532, 12845)]