21996870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:222

約数の個数: 128

約数和(自身を含む): 65664000

約数和(自身を除く): 43667130

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 37, 38, 42, 57, 70, 74, 95, 105, 111, 114, 133, 149, 185, 190, 210, 222, 259, 266, 285, 298, 370, 399, 447, 518, 555, 570, 665, 703, 745, 777, 798, 894, 1043, 1110, 1295, 1330, 1406, 1490, 1554, 1995, 2086, 2109, 2235, 2590, 2831, 3129, 3515, 3885, 3990, 4218, 4470, 4921, 5215, 5513, 5662, 6258, 7030, 7770, 8493, 9842, 10430, 10545, 11026, 14155, 14763, 15645, 16539, 16986, 19817, 21090, 24605, 27565, 28310, 29526, 31290, 33078, 38591, 39634, 42465, 49210, 55130, 59451, 73815, 77182, 82695, 84930, 99085, 104747, 115773, 118902, 147630, 165390, 192955, 198170, 209494, 231546, 297255, 314241, 385910, 523735, 578865, 594510, 628482, 733229, 1047470, 1157730, 1466458, 1571205, 2199687, 3142410, 3666145, 4399374, 7332290, 10998435, 21996870]

約数ペア:

[(1, 21996870), (2, 10998435), (3, 7332290), (5, 4399374), (6, 3666145), (7, 3142410), (10, 2199687), (14, 1571205), (15, 1466458), (19, 1157730), (21, 1047470), (30, 733229), (35, 628482), (37, 594510), (38, 578865), (42, 523735), (57, 385910), (70, 314241), (74, 297255), (95, 231546), (105, 209494), (111, 198170), (114, 192955), (133, 165390), (149, 147630), (185, 118902), (190, 115773), (210, 104747), (222, 99085), (259, 84930), (266, 82695), (285, 77182), (298, 73815), (370, 59451), (399, 55130), (447, 49210), (518, 42465), (555, 39634), (570, 38591), (665, 33078), (703, 31290), (745, 29526), (777, 28310), (798, 27565), (894, 24605), (1043, 21090), (1110, 19817), (1295, 16986), (1330, 16539), (1406, 15645), (1490, 14763), (1554, 14155), (1995, 11026), (2086, 10545), (2109, 10430), (2235, 9842), (2590, 8493), (2831, 7770), (3129, 7030), (3515, 6258), (3885, 5662), (3990, 5513), (4218, 5215), (4470, 4921)]