21278765490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{479}}^1\times {\mathrm{1291}}^1$

素因数の和:1848

約数の個数: 128

約数和(自身を含む): 54296248320

約数和(自身を除く): 33017482830

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 37, 62, 74, 93, 111, 155, 185, 186, 222, 310, 370, 465, 479, 555, 930, 958, 1110, 1147, 1291, 1437, 2294, 2395, 2582, 2874, 3441, 3873, 4790, 5735, 6455, 6882, 7185, 7746, 11470, 12910, 14370, 14849, 17205, 17723, 19365, 29698, 34410, 35446, 38730, 40021, 44547, 47767, 53169, 74245, 80042, 88615, 89094, 95534, 106338, 120063, 143301, 148490, 177230, 200105, 222735, 238835, 240126, 265845, 286602, 400210, 445470, 477670, 531690, 549413, 600315, 618389, 716505, 1098826, 1200630, 1236778, 1433010, 1480777, 1648239, 1855167, 2747065, 2961554, 3091945, 3296478, 3710334, 4442331, 5494130, 6183890, 7403885, 8241195, 8884662, 9275835, 14807770, 16482390, 18551670, 19170059, 22211655, 22880393, 38340118, 44423310, 45760786, 57510177, 68641179, 95850295, 114401965, 115020354, 137282358, 191700590, 228803930, 287550885, 343205895, 575101770, 686411790, 709292183, 1418584366, 2127876549, 3546460915, 4255753098, 7092921830, 10639382745, 21278765490]

約数ペア:

[(1, 21278765490), (2, 10639382745), (3, 7092921830), (5, 4255753098), (6, 3546460915), (10, 2127876549), (15, 1418584366), (30, 709292183), (31, 686411790), (37, 575101770), (62, 343205895), (74, 287550885), (93, 228803930), (111, 191700590), (155, 137282358), (185, 115020354), (186, 114401965), (222, 95850295), (310, 68641179), (370, 57510177), (465, 45760786), (479, 44423310), (555, 38340118), (930, 22880393), (958, 22211655), (1110, 19170059), (1147, 18551670), (1291, 16482390), (1437, 14807770), (2294, 9275835), (2395, 8884662), (2582, 8241195), (2874, 7403885), (3441, 6183890), (3873, 5494130), (4790, 4442331), (5735, 3710334), (6455, 3296478), (6882, 3091945), (7185, 2961554), (7746, 2747065), (11470, 1855167), (12910, 1648239), (14370, 1480777), (14849, 1433010), (17205, 1236778), (17723, 1200630), (19365, 1098826), (29698, 716505), (34410, 618389), (35446, 600315), (38730, 549413), (40021, 531690), (44547, 477670), (47767, 445470), (53169, 400210), (74245, 286602), (80042, 265845), (88615, 240126), (89094, 238835), (95534, 222735), (106338, 200105), (120063, 177230), (143301, 148490)]