21260400

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{2531}}^1$

素因数の和:2559

約数の個数: 120

約数和(自身を含む): 77864064

約数和(自身を除く): 56603664

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 100, 105, 112, 120, 140, 150, 168, 175, 200, 210, 240, 280, 300, 336, 350, 400, 420, 525, 560, 600, 700, 840, 1050, 1200, 1400, 1680, 2100, 2531, 2800, 4200, 5062, 7593, 8400, 10124, 12655, 15186, 17717, 20248, 25310, 30372, 35434, 37965, 40496, 50620, 53151, 60744, 63275, 70868, 75930, 88585, 101240, 106302, 121488, 126550, 141736, 151860, 177170, 189825, 202480, 212604, 253100, 265755, 283472, 303720, 354340, 379650, 425208, 442925, 506200, 531510, 607440, 708680, 759300, 850416, 885850, 1012400, 1063020, 1328775, 1417360, 1518600, 1771700, 2126040, 2657550, 3037200, 3543400, 4252080, 5315100, 7086800, 10630200, 21260400]

約数ペア:

[(1, 21260400), (2, 10630200), (3, 7086800), (4, 5315100), (5, 4252080), (6, 3543400), (7, 3037200), (8, 2657550), (10, 2126040), (12, 1771700), (14, 1518600), (15, 1417360), (16, 1328775), (20, 1063020), (21, 1012400), (24, 885850), (25, 850416), (28, 759300), (30, 708680), (35, 607440), (40, 531510), (42, 506200), (48, 442925), (50, 425208), (56, 379650), (60, 354340), (70, 303720), (75, 283472), (80, 265755), (84, 253100), (100, 212604), (105, 202480), (112, 189825), (120, 177170), (140, 151860), (150, 141736), (168, 126550), (175, 121488), (200, 106302), (210, 101240), (240, 88585), (280, 75930), (300, 70868), (336, 63275), (350, 60744), (400, 53151), (420, 50620), (525, 40496), (560, 37965), (600, 35434), (700, 30372), (840, 25310), (1050, 20248), (1200, 17717), (1400, 15186), (1680, 12655), (2100, 10124), (2531, 8400), (2800, 7593), (4200, 5062)]