81395460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:578

約数の個数: 144

約数和(自身を含む): 264176640

約数和(自身を除く): 182781180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 31, 36, 45, 58, 60, 62, 87, 90, 93, 116, 124, 145, 155, 174, 180, 186, 261, 279, 290, 310, 348, 372, 435, 465, 503, 522, 558, 580, 620, 870, 899, 930, 1006, 1044, 1116, 1305, 1395, 1509, 1740, 1798, 1860, 2012, 2515, 2610, 2697, 2790, 3018, 3596, 4495, 4527, 5030, 5220, 5394, 5580, 6036, 7545, 8091, 8990, 9054, 10060, 10788, 13485, 14587, 15090, 15593, 16182, 17980, 18108, 22635, 26970, 29174, 30180, 31186, 32364, 40455, 43761, 45270, 46779, 53940, 58348, 62372, 72935, 77965, 80910, 87522, 90540, 93558, 131283, 140337, 145870, 155930, 161820, 175044, 187116, 218805, 233895, 262566, 280674, 291740, 311860, 437610, 452197, 467790, 525132, 561348, 656415, 701685, 875220, 904394, 935580, 1312830, 1356591, 1403370, 1808788, 2260985, 2625660, 2713182, 2806740, 4069773, 4521970, 5426364, 6782955, 8139546, 9043940, 13565910, 16279092, 20348865, 27131820, 40697730, 81395460]

約数ペア:

[(1, 81395460), (2, 40697730), (3, 27131820), (4, 20348865), (5, 16279092), (6, 13565910), (9, 9043940), (10, 8139546), (12, 6782955), (15, 5426364), (18, 4521970), (20, 4069773), (29, 2806740), (30, 2713182), (31, 2625660), (36, 2260985), (45, 1808788), (58, 1403370), (60, 1356591), (62, 1312830), (87, 935580), (90, 904394), (93, 875220), (116, 701685), (124, 656415), (145, 561348), (155, 525132), (174, 467790), (180, 452197), (186, 437610), (261, 311860), (279, 291740), (290, 280674), (310, 262566), (348, 233895), (372, 218805), (435, 187116), (465, 175044), (503, 161820), (522, 155930), (558, 145870), (580, 140337), (620, 131283), (870, 93558), (899, 90540), (930, 87522), (1006, 80910), (1044, 77965), (1116, 72935), (1305, 62372), (1395, 58348), (1509, 53940), (1740, 46779), (1798, 45270), (1860, 43761), (2012, 40455), (2515, 32364), (2610, 31186), (2697, 30180), (2790, 29174), (3018, 26970), (3596, 22635), (4495, 18108), (4527, 17980), (5030, 16182), (5220, 15593), (5394, 15090), (5580, 14587), (6036, 13485), (7545, 10788), (8091, 10060), (8990, 9054)]