20954760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 128

約数和(自身を含む): 66908160

約数和(自身を除く): 45953400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 43, 60, 62, 86, 93, 120, 124, 129, 131, 155, 172, 186, 215, 248, 258, 262, 310, 344, 372, 393, 430, 465, 516, 524, 620, 645, 655, 744, 786, 860, 930, 1032, 1048, 1240, 1290, 1310, 1333, 1572, 1720, 1860, 1965, 2580, 2620, 2666, 3144, 3720, 3930, 3999, 4061, 5160, 5240, 5332, 5633, 6665, 7860, 7998, 8122, 10664, 11266, 12183, 13330, 15720, 15996, 16244, 16899, 19995, 20305, 22532, 24366, 26660, 28165, 31992, 32488, 33798, 39990, 40610, 45064, 48732, 53320, 56330, 60915, 67596, 79980, 81220, 84495, 97464, 112660, 121830, 135192, 159960, 162440, 168990, 174623, 225320, 243660, 337980, 349246, 487320, 523869, 675960, 698492, 873115, 1047738, 1396984, 1746230, 2095476, 2619345, 3492460, 4190952, 5238690, 6984920, 10477380, 20954760]

約数ペア:

[(1, 20954760), (2, 10477380), (3, 6984920), (4, 5238690), (5, 4190952), (6, 3492460), (8, 2619345), (10, 2095476), (12, 1746230), (15, 1396984), (20, 1047738), (24, 873115), (30, 698492), (31, 675960), (40, 523869), (43, 487320), (60, 349246), (62, 337980), (86, 243660), (93, 225320), (120, 174623), (124, 168990), (129, 162440), (131, 159960), (155, 135192), (172, 121830), (186, 112660), (215, 97464), (248, 84495), (258, 81220), (262, 79980), (310, 67596), (344, 60915), (372, 56330), (393, 53320), (430, 48732), (465, 45064), (516, 40610), (524, 39990), (620, 33798), (645, 32488), (655, 31992), (744, 28165), (786, 26660), (860, 24366), (930, 22532), (1032, 20305), (1048, 19995), (1240, 16899), (1290, 16244), (1310, 15996), (1333, 15720), (1572, 13330), (1720, 12183), (1860, 11266), (1965, 10664), (2580, 8122), (2620, 7998), (2666, 7860), (3144, 6665), (3720, 5633), (3930, 5332), (3999, 5240), (4061, 5160)]