21513014775

素因数分解:

$3^5\times 5^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{971}}^1$

素因数の和:1524

約数の個数: 144

約数和(自身を含む): 45802568448

約数和(自身を除く): 24289553673

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 243, 315, 405, 521, 525, 567, 675, 945, 971, 1215, 1563, 1575, 1701, 2025, 2605, 2835, 2913, 3647, 4689, 4725, 4855, 6075, 6797, 7815, 8505, 8739, 10941, 13025, 14067, 14175, 14565, 18235, 20391, 23445, 24275, 26217, 32823, 33985, 39075, 42201, 42525, 43695, 54705, 61173, 70335, 72825, 78651, 91175, 98469, 101955, 117225, 126603, 131085, 164115, 169925, 183519, 211005, 218475, 235953, 273525, 295407, 305865, 351675, 393255, 492345, 505891, 509775, 550557, 633015, 655425, 820575, 886221, 917595, 1055025, 1179765, 1477035, 1517673, 1529325, 1651671, 1966275, 2461725, 2529455, 2752785, 3165075, 3541237, 4431105, 4553019, 4587975, 5898825, 7385175, 7588365, 8258355, 10623711, 12647275, 13659057, 13763925, 17706185, 22155525, 22765095, 31871133, 37941825, 40977171, 41291775, 53118555, 68295285, 88530925, 95613399, 113825475, 122931513, 159355665, 204885855, 265592775, 286840197, 341476425, 478066995, 614657565, 796778325, 860520591, 1024429275, 1434200985, 2390334975, 3073287825, 4302602955, 7171004925, 21513014775]

約数ペア:

[(1, 21513014775), (3, 7171004925), (5, 4302602955), (7, 3073287825), (9, 2390334975), (15, 1434200985), (21, 1024429275), (25, 860520591), (27, 796778325), (35, 614657565), (45, 478066995), (63, 341476425), (75, 286840197), (81, 265592775), (105, 204885855), (135, 159355665), (175, 122931513), (189, 113825475), (225, 95613399), (243, 88530925), (315, 68295285), (405, 53118555), (521, 41291775), (525, 40977171), (567, 37941825), (675, 31871133), (945, 22765095), (971, 22155525), (1215, 17706185), (1563, 13763925), (1575, 13659057), (1701, 12647275), (2025, 10623711), (2605, 8258355), (2835, 7588365), (2913, 7385175), (3647, 5898825), (4689, 4587975), (4725, 4553019), (4855, 4431105), (6075, 3541237), (6797, 3165075), (7815, 2752785), (8505, 2529455), (8739, 2461725), (10941, 1966275), (13025, 1651671), (14067, 1529325), (14175, 1517673), (14565, 1477035), (18235, 1179765), (20391, 1055025), (23445, 917595), (24275, 886221), (26217, 820575), (32823, 655425), (33985, 633015), (39075, 550557), (42201, 509775), (42525, 505891), (43695, 492345), (54705, 393255), (61173, 351675), (70335, 305865), (72825, 295407), (78651, 273525), (91175, 235953), (98469, 218475), (101955, 211005), (117225, 183519), (126603, 169925), (131085, 164115)]