21371028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:357

約数の個数: 96

約数和(自身を含む): 61071360

約数和(自身を除く): 39700332

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 31, 42, 58, 62, 84, 87, 93, 116, 124, 174, 186, 203, 217, 283, 348, 372, 406, 434, 566, 609, 651, 812, 849, 868, 899, 1132, 1218, 1302, 1698, 1798, 1981, 2436, 2604, 2697, 3396, 3596, 3962, 5394, 5943, 6293, 7924, 8207, 8773, 10788, 11886, 12586, 16414, 17546, 18879, 23772, 24621, 25172, 26319, 32828, 35092, 37758, 49242, 52638, 57449, 61411, 75516, 98484, 105276, 114898, 122822, 172347, 184233, 229796, 245644, 254417, 344694, 368466, 508834, 689388, 736932, 763251, 1017668, 1526502, 1780919, 3053004, 3561838, 5342757, 7123676, 10685514, 21371028]

約数ペア:

[(1, 21371028), (2, 10685514), (3, 7123676), (4, 5342757), (6, 3561838), (7, 3053004), (12, 1780919), (14, 1526502), (21, 1017668), (28, 763251), (29, 736932), (31, 689388), (42, 508834), (58, 368466), (62, 344694), (84, 254417), (87, 245644), (93, 229796), (116, 184233), (124, 172347), (174, 122822), (186, 114898), (203, 105276), (217, 98484), (283, 75516), (348, 61411), (372, 57449), (406, 52638), (434, 49242), (566, 37758), (609, 35092), (651, 32828), (812, 26319), (849, 25172), (868, 24621), (899, 23772), (1132, 18879), (1218, 17546), (1302, 16414), (1698, 12586), (1798, 11886), (1981, 10788), (2436, 8773), (2604, 8207), (2697, 7924), (3396, 6293), (3596, 5943), (3962, 5394)]