21905898

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 53437440

約数和(自身を除く): 31531542

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 97, 114, 133, 194, 266, 283, 291, 399, 566, 582, 679, 798, 849, 1358, 1698, 1843, 1981, 2037, 3686, 3962, 4074, 5377, 5529, 5943, 10754, 11058, 11886, 12901, 16131, 25802, 27451, 32262, 37639, 38703, 54902, 75278, 77406, 82353, 112917, 164706, 192157, 225834, 384314, 521569, 576471, 1043138, 1152942, 1564707, 3129414, 3650983, 7301966, 10952949, 21905898]

約数ペア:

[(1, 21905898), (2, 10952949), (3, 7301966), (6, 3650983), (7, 3129414), (14, 1564707), (19, 1152942), (21, 1043138), (38, 576471), (42, 521569), (57, 384314), (97, 225834), (114, 192157), (133, 164706), (194, 112917), (266, 82353), (283, 77406), (291, 75278), (399, 54902), (566, 38703), (582, 37639), (679, 32262), (798, 27451), (849, 25802), (1358, 16131), (1698, 12901), (1843, 11886), (1981, 11058), (2037, 10754), (3686, 5943), (3962, 5529), (4074, 5377)]