21397248

素因数分解:

$2^8\times 3^2\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:310

約数の個数: 108

約数和(自身を含む): 63613368

約数和(自身を除く): 42216120

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 37, 48, 64, 72, 74, 96, 111, 128, 144, 148, 192, 222, 251, 256, 288, 296, 333, 384, 444, 502, 576, 592, 666, 753, 768, 888, 1004, 1152, 1184, 1332, 1506, 1776, 2008, 2259, 2304, 2368, 2664, 3012, 3552, 4016, 4518, 4736, 5328, 6024, 7104, 8032, 9036, 9287, 9472, 10656, 12048, 14208, 16064, 18072, 18574, 21312, 24096, 27861, 28416, 32128, 36144, 37148, 42624, 48192, 55722, 64256, 72288, 74296, 83583, 85248, 96384, 111444, 144576, 148592, 167166, 192768, 222888, 289152, 297184, 334332, 445776, 578304, 594368, 668664, 891552, 1188736, 1337328, 1783104, 2377472, 2674656, 3566208, 5349312, 7132416, 10698624, 21397248]

約数ペア:

[(1, 21397248), (2, 10698624), (3, 7132416), (4, 5349312), (6, 3566208), (8, 2674656), (9, 2377472), (12, 1783104), (16, 1337328), (18, 1188736), (24, 891552), (32, 668664), (36, 594368), (37, 578304), (48, 445776), (64, 334332), (72, 297184), (74, 289152), (96, 222888), (111, 192768), (128, 167166), (144, 148592), (148, 144576), (192, 111444), (222, 96384), (251, 85248), (256, 83583), (288, 74296), (296, 72288), (333, 64256), (384, 55722), (444, 48192), (502, 42624), (576, 37148), (592, 36144), (666, 32128), (753, 28416), (768, 27861), (888, 24096), (1004, 21312), (1152, 18574), (1184, 18072), (1332, 16064), (1506, 14208), (1776, 12048), (2008, 10656), (2259, 9472), (2304, 9287), (2368, 9036), (2664, 8032), (3012, 7104), (3552, 6024), (4016, 5328), (4518, 4736)]