21971250

素因数分解:

$2^1\times 3^4\times 5^4\times 7^1\times {\mathrm{31}}^1$

素因数の和:72

約数の個数: 200

約数和(自身を含む): 72576768

約数和(自身を除く): 50605518

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 27, 30, 31, 35, 42, 45, 50, 54, 62, 63, 70, 75, 81, 90, 93, 105, 125, 126, 135, 150, 155, 162, 175, 186, 189, 210, 217, 225, 250, 270, 279, 310, 315, 350, 375, 378, 405, 434, 450, 465, 525, 558, 567, 625, 630, 651, 675, 750, 775, 810, 837, 875, 930, 945, 1050, 1085, 1125, 1134, 1250, 1302, 1350, 1395, 1550, 1575, 1674, 1750, 1875, 1890, 1953, 2025, 2170, 2250, 2325, 2511, 2625, 2790, 2835, 3150, 3255, 3375, 3750, 3875, 3906, 4050, 4185, 4375, 4650, 4725, 5022, 5250, 5425, 5625, 5670, 5859, 6510, 6750, 6975, 7750, 7875, 8370, 8750, 9450, 9765, 10125, 10850, 11250, 11625, 11718, 12555, 13125, 13950, 14175, 15750, 16275, 16875, 17577, 19375, 19530, 20250, 20925, 23250, 23625, 25110, 26250, 27125, 28350, 29295, 32550, 33750, 34875, 35154, 38750, 39375, 41850, 47250, 48825, 50625, 54250, 58125, 58590, 62775, 69750, 70875, 78750, 81375, 87885, 97650, 101250, 104625, 116250, 118125, 125550, 135625, 141750, 146475, 162750, 174375, 175770, 209250, 236250, 244125, 271250, 292950, 313875, 348750, 354375, 406875, 439425, 488250, 523125, 627750, 708750, 732375, 813750, 878850, 1046250, 1220625, 1464750, 1569375, 2197125, 2441250, 3138750, 3661875, 4394250, 7323750, 10985625, 21971250]

約数ペア:

[(1, 21971250), (2, 10985625), (3, 7323750), (5, 4394250), (6, 3661875), (7, 3138750), (9, 2441250), (10, 2197125), (14, 1569375), (15, 1464750), (18, 1220625), (21, 1046250), (25, 878850), (27, 813750), (30, 732375), (31, 708750), (35, 627750), (42, 523125), (45, 488250), (50, 439425), (54, 406875), (62, 354375), (63, 348750), (70, 313875), (75, 292950), (81, 271250), (90, 244125), (93, 236250), (105, 209250), (125, 175770), (126, 174375), (135, 162750), (150, 146475), (155, 141750), (162, 135625), (175, 125550), (186, 118125), (189, 116250), (210, 104625), (217, 101250), (225, 97650), (250, 87885), (270, 81375), (279, 78750), (310, 70875), (315, 69750), (350, 62775), (375, 58590), (378, 58125), (405, 54250), (434, 50625), (450, 48825), (465, 47250), (525, 41850), (558, 39375), (567, 38750), (625, 35154), (630, 34875), (651, 33750), (675, 32550), (750, 29295), (775, 28350), (810, 27125), (837, 26250), (875, 25110), (930, 23625), (945, 23250), (1050, 20925), (1085, 20250), (1125, 19530), (1134, 19375), (1250, 17577), (1302, 16875), (1350, 16275), (1395, 15750), (1550, 14175), (1575, 13950), (1674, 13125), (1750, 12555), (1875, 11718), (1890, 11625), (1953, 11250), (2025, 10850), (2170, 10125), (2250, 9765), (2325, 9450), (2511, 8750), (2625, 8370), (2790, 7875), (2835, 7750), (3150, 6975), (3255, 6750), (3375, 6510), (3750, 5859), (3875, 5670), (3906, 5625), (4050, 5425), (4185, 5250), (4375, 5022), (4650, 4725)]