21002800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{577}}^1$

素因数の和:615

約数の個数: 120

約数和(自身を含む): 62211296

約数和(自身を除く): 41208496

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 35, 40, 50, 52, 56, 65, 70, 80, 91, 100, 104, 112, 130, 140, 175, 182, 200, 208, 260, 280, 325, 350, 364, 400, 455, 520, 560, 577, 650, 700, 728, 910, 1040, 1154, 1300, 1400, 1456, 1820, 2275, 2308, 2600, 2800, 2885, 3640, 4039, 4550, 4616, 5200, 5770, 7280, 7501, 8078, 9100, 9232, 11540, 14425, 15002, 16156, 18200, 20195, 23080, 28850, 30004, 32312, 36400, 37505, 40390, 46160, 52507, 57700, 60008, 64624, 75010, 80780, 100975, 105014, 115400, 120016, 150020, 161560, 187525, 201950, 210028, 230800, 262535, 300040, 323120, 375050, 403900, 420056, 525070, 600080, 750100, 807800, 840112, 1050140, 1312675, 1500200, 1615600, 2100280, 2625350, 3000400, 4200560, 5250700, 10501400, 21002800]

約数ペア:

[(1, 21002800), (2, 10501400), (4, 5250700), (5, 4200560), (7, 3000400), (8, 2625350), (10, 2100280), (13, 1615600), (14, 1500200), (16, 1312675), (20, 1050140), (25, 840112), (26, 807800), (28, 750100), (35, 600080), (40, 525070), (50, 420056), (52, 403900), (56, 375050), (65, 323120), (70, 300040), (80, 262535), (91, 230800), (100, 210028), (104, 201950), (112, 187525), (130, 161560), (140, 150020), (175, 120016), (182, 115400), (200, 105014), (208, 100975), (260, 80780), (280, 75010), (325, 64624), (350, 60008), (364, 57700), (400, 52507), (455, 46160), (520, 40390), (560, 37505), (577, 36400), (650, 32312), (700, 30004), (728, 28850), (910, 23080), (1040, 20195), (1154, 18200), (1300, 16156), (1400, 15002), (1456, 14425), (1820, 11540), (2275, 9232), (2308, 9100), (2600, 8078), (2800, 7501), (2885, 7280), (3640, 5770), (4039, 5200), (4550, 4616)]