21031206

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:629

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 30394074

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 31, 42, 58, 62, 87, 93, 174, 186, 203, 217, 406, 434, 557, 609, 651, 899, 1114, 1218, 1302, 1671, 1798, 2697, 3342, 3899, 5394, 6293, 7798, 11697, 12586, 16153, 17267, 18879, 23394, 32306, 34534, 37758, 48459, 51801, 96918, 103602, 113071, 120869, 226142, 241738, 339213, 362607, 500743, 678426, 725214, 1001486, 1502229, 3004458, 3505201, 7010402, 10515603, 21031206]

約数ペア:

[(1, 21031206), (2, 10515603), (3, 7010402), (6, 3505201), (7, 3004458), (14, 1502229), (21, 1001486), (29, 725214), (31, 678426), (42, 500743), (58, 362607), (62, 339213), (87, 241738), (93, 226142), (174, 120869), (186, 113071), (203, 103602), (217, 96918), (406, 51801), (434, 48459), (557, 37758), (609, 34534), (651, 32306), (899, 23394), (1114, 18879), (1218, 17267), (1302, 16153), (1671, 12586), (1798, 11697), (2697, 7798), (3342, 6293), (3899, 5394)]