21000325640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{613}}^1\times {\mathrm{4219}}^1$

素因数の和:4879

約数の個数: 128

約数和(自身を含む): 55967328000

約数和(自身を除く): 34967002360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 613, 812, 1015, 1160, 1226, 1624, 2030, 2452, 3065, 4060, 4219, 4291, 4904, 6130, 8120, 8438, 8582, 12260, 16876, 17164, 17777, 21095, 21455, 24520, 29533, 33752, 34328, 35554, 42190, 42910, 59066, 71108, 84380, 85820, 88885, 118132, 122351, 124439, 142216, 147665, 168760, 171640, 177770, 236264, 244702, 248878, 295330, 355540, 489404, 497756, 590660, 611755, 622195, 711080, 856457, 978808, 995512, 1181320, 1223510, 1244390, 1712914, 2447020, 2488780, 2586247, 3425828, 4282285, 4894040, 4977560, 5172494, 6851656, 8564570, 10344988, 12931235, 17129140, 18103729, 20689976, 25862470, 34258280, 36207458, 51724940, 72414916, 75001163, 90518645, 103449880, 144829832, 150002326, 181037290, 300004652, 362074580, 375005815, 525008141, 600009304, 724149160, 750011630, 1050016282, 1500023260, 2100032564, 2625040705, 3000046520, 4200065128, 5250081410, 10500162820, 21000325640]

約数ペア:

[(1, 21000325640), (2, 10500162820), (4, 5250081410), (5, 4200065128), (7, 3000046520), (8, 2625040705), (10, 2100032564), (14, 1500023260), (20, 1050016282), (28, 750011630), (29, 724149160), (35, 600009304), (40, 525008141), (56, 375005815), (58, 362074580), (70, 300004652), (116, 181037290), (140, 150002326), (145, 144829832), (203, 103449880), (232, 90518645), (280, 75001163), (290, 72414916), (406, 51724940), (580, 36207458), (613, 34258280), (812, 25862470), (1015, 20689976), (1160, 18103729), (1226, 17129140), (1624, 12931235), (2030, 10344988), (2452, 8564570), (3065, 6851656), (4060, 5172494), (4219, 4977560), (4291, 4894040), (4904, 4282285), (6130, 3425828), (8120, 2586247), (8438, 2488780), (8582, 2447020), (12260, 1712914), (16876, 1244390), (17164, 1223510), (17777, 1181320), (21095, 995512), (21455, 978808), (24520, 856457), (29533, 711080), (33752, 622195), (34328, 611755), (35554, 590660), (42190, 497756), (42910, 489404), (59066, 355540), (71108, 295330), (84380, 248878), (85820, 244702), (88885, 236264), (118132, 177770), (122351, 171640), (124439, 168760), (142216, 147665)]