21000929456

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{51487}}^1$

素因数の和:51598

約数の個数: 80

約数和(自身を含む): 45853565184

約数和(自身を除く): 24852635728

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 53, 74, 104, 106, 148, 208, 212, 296, 424, 481, 592, 689, 848, 962, 1378, 1924, 1961, 2756, 3848, 3922, 5512, 7696, 7844, 11024, 15688, 25493, 31376, 50986, 51487, 101972, 102974, 203944, 205948, 407888, 411896, 669331, 823792, 1338662, 1905019, 2677324, 2728811, 3810038, 5354648, 5457622, 7620076, 10709296, 10915244, 15240152, 21830488, 24765247, 30480304, 35474543, 43660976, 49530494, 70949086, 99060988, 100966007, 141898172, 198121976, 201932014, 283796344, 396243952, 403864028, 567592688, 807728056, 1312558091, 1615456112, 2625116182, 5250232364, 10500464728, 21000929456]

約数ペア:

[(1, 21000929456), (2, 10500464728), (4, 5250232364), (8, 2625116182), (13, 1615456112), (16, 1312558091), (26, 807728056), (37, 567592688), (52, 403864028), (53, 396243952), (74, 283796344), (104, 201932014), (106, 198121976), (148, 141898172), (208, 100966007), (212, 99060988), (296, 70949086), (424, 49530494), (481, 43660976), (592, 35474543), (689, 30480304), (848, 24765247), (962, 21830488), (1378, 15240152), (1924, 10915244), (1961, 10709296), (2756, 7620076), (3848, 5457622), (3922, 5354648), (5512, 3810038), (7696, 2728811), (7844, 2677324), (11024, 1905019), (15688, 1338662), (25493, 823792), (31376, 669331), (50986, 411896), (51487, 407888), (101972, 205948), (102974, 203944)]