20399400

素因数分解:

$2^3\times 3^2\times 5^2\times 7^1\times {\mathrm{1619}}^1$

素因数の和:1648

約数の個数: 144

約数和(自身を含む): 78343200

約数和(自身を除く): 57943800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 25, 28, 30, 35, 36, 40, 42, 45, 50, 56, 60, 63, 70, 72, 75, 84, 90, 100, 105, 120, 126, 140, 150, 168, 175, 180, 200, 210, 225, 252, 280, 300, 315, 350, 360, 420, 450, 504, 525, 600, 630, 700, 840, 900, 1050, 1260, 1400, 1575, 1619, 1800, 2100, 2520, 3150, 3238, 4200, 4857, 6300, 6476, 8095, 9714, 11333, 12600, 12952, 14571, 16190, 19428, 22666, 24285, 29142, 32380, 33999, 38856, 40475, 45332, 48570, 56665, 58284, 64760, 67998, 72855, 80950, 90664, 97140, 101997, 113330, 116568, 121425, 135996, 145710, 161900, 169995, 194280, 203994, 226660, 242850, 271992, 283325, 291420, 323800, 339990, 364275, 407988, 453320, 485700, 509985, 566650, 582840, 679980, 728550, 815976, 849975, 971400, 1019970, 1133300, 1359960, 1457100, 1699950, 2039940, 2266600, 2549925, 2914200, 3399900, 4079880, 5099850, 6799800, 10199700, 20399400]

約数ペア:

[(1, 20399400), (2, 10199700), (3, 6799800), (4, 5099850), (5, 4079880), (6, 3399900), (7, 2914200), (8, 2549925), (9, 2266600), (10, 2039940), (12, 1699950), (14, 1457100), (15, 1359960), (18, 1133300), (20, 1019970), (21, 971400), (24, 849975), (25, 815976), (28, 728550), (30, 679980), (35, 582840), (36, 566650), (40, 509985), (42, 485700), (45, 453320), (50, 407988), (56, 364275), (60, 339990), (63, 323800), (70, 291420), (72, 283325), (75, 271992), (84, 242850), (90, 226660), (100, 203994), (105, 194280), (120, 169995), (126, 161900), (140, 145710), (150, 135996), (168, 121425), (175, 116568), (180, 113330), (200, 101997), (210, 97140), (225, 90664), (252, 80950), (280, 72855), (300, 67998), (315, 64760), (350, 58284), (360, 56665), (420, 48570), (450, 45332), (504, 40475), (525, 38856), (600, 33999), (630, 32380), (700, 29142), (840, 24285), (900, 22666), (1050, 19428), (1260, 16190), (1400, 14571), (1575, 12952), (1619, 12600), (1800, 11333), (2100, 9714), (2520, 8095), (3150, 6476), (3238, 6300), (4200, 4857)]